U.S. patent application number 16/050375 was filed with the patent office on 2020-02-06 for enhanced immersive media pipeline for correction of artifacts and clarity of objects in computing environments.
This patent application is currently assigned to Intel Corporation. The applicant listed for this patent is Intel Corporation. Invention is credited to NARAYAN BISWAL, GOKCEN CILINGIR, JAMES HOLLAND, ATSUO KUWAHARA, SANG-HEE LEE, JASON TANNER, MAYURESH VARERKAR, KAI XIAO.
Application Number | 20200043217 16/050375 |
Document ID | / |
Family ID | 69168089 |
Filed Date | 2020-02-06 |
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United States Patent
Application |
20200043217 |
Kind Code |
A1 |
CILINGIR; GOKCEN ; et
al. |
February 6, 2020 |
ENHANCED IMMERSIVE MEDIA PIPELINE FOR CORRECTION OF ARTIFACTS AND
CLARITY OF OBJECTS IN COMPUTING ENVIRONMENTS
Abstract
A mechanism is described for facilitating enhanced immersive
media pipeline for correction of artifacts and clarity of objects
in computing environments. An apparatus of embodiments, as
described herein, includes one or more processors to extract
semantic data relating to objects in a scene captured through one
or more cameras, where the objects include distortions, and form,
based on the semantic data, a three-dimensional (3D) model of
contents of the scene, where the contents include the objects. The
one or more processors are further to encode the 3D model including
the contents and the semantic data into an encoded file having
encoded contents and encoded semantic data and transmit the encoded
file over an immersive media pipeline to facilitate correction of
the distortions and rendering the scene including the objects
without the distortions.
Inventors: |
CILINGIR; GOKCEN; (SAN JOSE,
CA) ; KUWAHARA; ATSUO; (Portland, OR) ;
BISWAL; NARAYAN; (Folsom, CA) ; HOLLAND; JAMES;
(Folsom, CA) ; LEE; SANG-HEE; (San Jose, CA)
; TANNER; JASON; (Folsom, CA) ; VARERKAR;
MAYURESH; (Folsom, CA) ; XIAO; KAI; (San Jose,
CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Intel Corporation |
Santa Clara |
CA |
US |
|
|
Assignee: |
Intel Corporation
Santa Clara
CA
|
Family ID: |
69168089 |
Appl. No.: |
16/050375 |
Filed: |
July 31, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04N 19/597 20141101;
G06T 9/001 20130101; G06T 15/005 20130101 |
International
Class: |
G06T 15/00 20060101
G06T015/00; G06T 9/00 20060101 G06T009/00; H04N 19/597 20060101
H04N019/597 |
Claims
1. An apparatus comprising: one or processors to: extract semantic
data relating to objects in a scene captured through one or more
cameras, wherein the objects include distortions; form, based on
the semantic data, a three-dimensional (3D) model of contents of
the scene, wherein the contents include the objects; encode the 3D
model including the contents and the semantic data into an encoded
file having encoded contents and encoded semantic data; and
transmit the encoded file over an immersive media pipeline to
facilitate correction of the distortions and rendering the scene
including the objects without the distortions.
2. The apparatus of claim 1, wherein the one or more processors are
further to detect the scene and the distortions associated with the
objects, wherein the distortions include artifacts and gaps,
wherein the contents of the scene are based on or include immersive
media contents including immersive videos.
3. The apparatus of claim 1, wherein the semantic data comprises
properties associated with the objects, wherein the properties
include one or more of lighting properties, sound properties, and
semantic labeling, wherein the objects include one or more of
living things and non-living things.
4. The apparatus of claim 3, wherein the properties codebook
properties are maintained in a codebook at a database, wherein the
codebook properties to facilitate encoding of the 3D model with
minimal bits, wherein the codebook properties are further to
facilitate classification of the objects based on one or more of
texture, material, and form.
5. The apparatus of claim 2, wherein the immersive videos comprise
one or more of three degree-of-freedom+(3DoF+) videos and six
degree-of-freedom (6DoF) videos, wherein the one or more processors
comprise a graphics processor coupled to an application processor
and a memory, wherein the graphics and application processors are
co-located on a common semiconductor package.
6. An apparatus comprising: one or more processors to: receive an
encoded file having encoded contents and encoded semantic data
associated with objects in a scene; decode the encoded contents and
the encoded semantic data into decoded contents and decoded
semantic data, respectively; interpret the semantic data based on
the contents including the objects having distortions; and correct,
based on the interpreted semantic data, the distortions associated
with the objects.
7. The apparatus of claim 6, wherein the correction of the
distortions comprises one or more of normalizing colors and
textures of the objects and filling gaps in the objects.
8. The apparatus of claim 6, wherein the one or more processors are
further to prepare a rendering version of the scene, wherein the
rendering version includes the objects without the distortions.
9. The apparatus of claim 8, wherein the one or more processors are
further to render the rendering version of the scene such that the
scene is display for viewing using one or more display devices,
wherein the contents of the scene are based on or include immersive
media contents including immersive videos.
10. The apparatus of claim 9, wherein the immersive videos comprise
one or more of three degree-of-freedom+(3DoF+) videos and six
degree-of-freedom (6DoF) videos, wherein the one or more processors
comprise a graphics processor coupled to an application processor
and a memory, wherein the graphics and application processors are
co-located on a common semiconductor package.
11. A method comprising: extracting semantic data relating to
objects in a scene captured through one or more cameras, wherein
the objects include distortions; forming, based on the semantic
data, a three-dimensional (3D) model of contents of the scene,
wherein the contents include the objects; encoding the 3D model
including the contents and the semantic data into an encoded file
having encoded contents and encoded semantic data; and transmitting
the encoded file over an immersive media pipeline to facilitate
correction of the distortions and rendering the scene including the
objects without the distortions.
12. The method of claim 11, further comprising detecting the scene
and the distortions associated with the objects, wherein the
distortions include artifacts and gaps, wherein the contents of the
scene are based on or include immersive media contents including
immersive videos.
13. The method of claim 11, wherein the semantic data comprises
properties associated with the objects, wherein the properties
include one or more of lighting properties, sound properties, and
semantic labeling, wherein the objects include one or more of
living things and non-living things.
14. The method of claim 13, wherein the properties codebook
properties are maintained in a codebook at a database, wherein the
codebook properties to facilitate encoding of the 3D model with
minimal bits, wherein the codebook properties are further to
facilitate classification of the objects based on one or more of
texture, material, and form.
15. The method of claim 12, wherein the immersive videos comprise
one or more of three degree-of-freedom+(3DoF+) videos and six
degree-of-freedom (6DoF) videos, wherein the method is facilitated
by one or more processors of a computing device, the one or more
processors comprising a graphics processor coupled to an
application processor and a memory, wherein the graphics and
application processors are co-located on a common semiconductor
package.
16. At least one machine-readable medium comprising instructions
which, when executed by one or more processors, cause the one or
more processors to perform operations comprising: extracting
semantic data relating to objects in a scene captured through one
or more cameras, wherein the objects include distortions; forming,
based on the semantic data, a three-dimensional (3D) model of
contents of the scene, wherein the contents include the objects;
encoding the 3D model including the contents and the semantic data
into an encoded file having encoded contents and encoded semantic
data; and transmitting the encoded file over an immersive media
pipeline to facilitate correction of the distortions and rendering
the scene including the objects without the distortions.
17. The machine-readable medium of claim 16, wherein the operations
further comprise detecting the scene and the distortions associated
with the objects, wherein the distortions include artifacts and
gaps, wherein the contents of the scene are based on or include
immersive media contents including immersive videos.
18. The machine-readable medium of claim 16, wherein the semantic
data comprises properties associated with the objects, wherein the
properties include one or more of lighting properties, sound
properties, and semantic labeling, wherein the objects include one
or more of living things and non-living things.
19. The machine-readable medium of claim 18, wherein the properties
codebook properties are maintained in a codebook at a database,
wherein the codebook properties to facilitate encoding of the 3D
model with minimal bits, wherein the codebook properties are
further to facilitate classification of the objects based on one or
more of texture, material, and form.
20. The machine-readable medium of claim 17, wherein the immersive
videos comprise one or more of three degree-of-freedom+(3DoF+)
videos and six degree-of-freedom (6DoF) videos, the one or more
processors comprising a graphics processor coupled to an
application processor and a memory, wherein the graphics and
application processors are co-located on a common semiconductor
package.
Description
RELATED APPLICATION
[0001] This application relates to commonly assigned U.S. patent
application Ser. No. 16/050,153, entitled REDUCED RENDERING OF
SIX-DEGREE OF FREEDOM VIDEO, by Jill Boyce, filed Jul. 31, 2018,
the entire contents of which are incorporated herein by
reference.
FIELD
[0002] Embodiments described herein generally relate to computers.
More particularly, embodiments are described for facilitating
enhanced immersive media pipeline for correction of artifacts and
clarity of objects in computing environments.
BACKGROUND
[0003] Graphics processing has evolved from two-dimensional (2D)
views to three-dimensional (3D) views. Continued evolution of
graphics processing envisions the further development of 360-degree
video and the development of three degree-of-freedom (3DoF) video
and six degree-of-freedom (6DoF) video for the presentation of
immersive video (IV), augmented reality (AR), and virtual reality
(VR) experiences.
[0004] Six degree of freedom video is an emerging immersive video
use case, which provides a viewer an immersive media experience
where the viewer controls the viewpoint of a scene. The simpler
3DoF video (e.g. 360 degree or panoramic video) allows a viewer to
change orientation around the X, Y, and Z axes, described as yaw,
pitch, and roll, from a fixed position, where 6DoF video enables
the viewer to change position through translational movements along
the X, Y, and Z axes.
[0005] It is contemplated that 6DoF video can be represented using
point clouds. However, the rendering of point cloud data is
computationally expensive, making it difficult to render point
cloud video containing large numbers of points at high frame rates.
Furthermore, point cloud data rates are large, requiring a large
capacity for storage or transmission.
[0006] Correction of artifacts and clarity of objects has long been
a concern in video processing and rendering in computing
environments. Conventional techniques are considerably inefficient
and wasteful of resources and fail to offer high quality results.
Conventional techniques lack clarity in object recognition and
viewing along with lacking precision in classification of images
and objects.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Embodiments are illustrated by way of example, and not by
way of limitation, in the figures of the accompanying drawings in
which like reference numerals refer to similar elements.
[0008] FIG. 1 is a block diagram of a processing system, according
to an embodiment.
[0009] FIG. 2 is a block diagram of an embodiment of a processor
having one or more processor cores, an integrated memory
controller, and an integrated graphics processor.
[0010] FIG. 3 is a block diagram of a graphics processor, which may
be a discrete graphics processing unit, or may be a graphics
processor integrated with a plurality of processing cores.
[0011] FIG. 4 is a block diagram of a graphics processing engine of
a graphics processor in accordance with some embodiments.
[0012] FIG. 5 is a block diagram of hardware logic of a graphics
processor core according to some embodiments.
[0013] FIG. 6A-6B illustrate thread execution logic including an
array of processing elements employed in a graphics processor core
according to some embodiments.
[0014] FIG. 7 is a block diagram illustrating a graphics processor
instruction formats according to some embodiments.
[0015] FIG. 8 is a block diagram of another embodiment of a
graphics processor.
[0016] FIG. 9A is a block diagram illustrating a graphics processor
command format according to an embodiment.
[0017] FIG. 9B is a block diagram illustrating a graphics processor
command sequence according to an embodiment.
[0018] FIG. 10 illustrates exemplary graphics software architecture
for a data processing system according to some embodiments.
[0019] FIG. 11A is a block diagram illustrating an IP core
development system that may be used to manufacture an integrated
circuit to perform operations according to an embodiment.
[0020] FIG. 11B illustrates a cross-section side view of an
integrated circuit package assembly according to some
embodiments.
[0021] FIG. 12 is a block diagram illustrating an exemplary system
on a chip integrated circuit that may be fabricated using one or
more IP cores, according to an embodiment.
[0022] FIGS. 13A-13B are block diagrams illustrating exemplary
graphics processors for use within a System on Chip (SoC),
according to embodiments described herein.
[0023] FIGS. 14A-14B illustrate additional exemplary graphics
processor logic according to embodiments described herein.
[0024] FIG. 15A illustrates multiple forms of immersive video.
[0025] FIG. 15B illustrates image projection and texture planes for
immersive video.
[0026] FIG. 16 illustrates a client-server system for generation
and consumption of immersive video.
[0027] FIGS. 17A-17B illustrate systems for encoding and decoding
3DoF Plus content.
[0028] FIGS. 18A-18B illustrate systems for encoding and decoding
6DoF textured geometry data.
[0029] FIGS. 19A-19B illustrate a system for encoding and decoding
6DoF point cloud data.
[0030] FIG. 20 illustrates a computing device hosting an enhanced
construction pipeline mechanism according to one embodiment.
[0031] FIG. 21 illustrates an enhanced immersive media construction
pipeline mechanism and an enhanced immersive media render pipeline
mechanism according to one embodiment.
[0032] FIG. 22 illustrates a conventional pipeline employing a
conventional technique.
[0033] FIG. 23A illustrates an enhanced immersive media pipeline
according to one embodiment.
[0034] FIG. 23B illustrates an enhanced immersive media pipeline
according to one embodiment.
[0035] FIG. 24A illustrates a method for using semantic data in an
enhanced immersive media pipeline according to one embodiment.
[0036] FIG. 24B illustrates a method for using codebook properties
in an enhanced immersive media pipeline according to one
embodiment.
DETAILED DESCRIPTION
[0037] In the following description, numerous specific details are
set forth. However, embodiments, as described herein, may be
practiced without these specific details. In other instances,
well-known circuits, structures and techniques have not been shown
in detail in order not to obscure the understanding of this
description.
[0038] Embodiments provide for novel technique for correction of
artifacts, texture boundaries based on object recognition, enhanced
construction of point cloud fusing artificial intelligence
(AI)-based image object classifications. As will be further
described throughout this document, this novel technique further
provides for a resource-efficient system for better processing and
outputting of objects through efficient correction of artifacts,
recognition and classification of object, etc.
[0039] It is contemplated that terms like "request", "query",
"job", "work", "work item", and "workload" may be referenced
interchangeably throughout this document. Similarly, an
"application" or "agent" may refer to or include a computer
program, a software application, a game, a workstation application,
etc., offered through an application programming interface (API),
such as a free rendering API, such as Open Graphics Library
(OpenGL.RTM.), Open Computing Language (OpenCL.RTM.), CUDA.RTM.,
DirectX.RTM. 11, DirectX.RTM. 12, etc., where "dispatch" may be
interchangeably referred to as "work unit" or "draw" and similarly,
"application" may be interchangeably referred to as "workflow" or
simply "agent". For example, a workload, such as that of a
three-dimensional (3D) game, may include and issue any number and
type of "frames" where each frame may represent an image (e.g.,
sailboat, human face). Further, each frame may include and offer
any number and type of work units, where each work unit may
represent a part (e.g., mast of sailboat, forehead of human face)
of the image (e.g., sailboat, human face) represented by its
corresponding frame. However, for the sake of consistency, each
item may be referenced by a single term (e.g., "dispatch", "agent",
etc.) throughout this document.
[0040] In some embodiments, terms like "display screen" and
"display surface" may be used interchangeably referring to the
visible portion of a display device while the rest of the display
device may be embedded into a computing device, such as a
smartphone, a wearable device, etc. It is contemplated and to be
noted that embodiments are not limited to any particular computing
device, software application, hardware component, display device,
display screen or surface, protocol, standard, etc. For example,
embodiments may be applied to and used with any number and type of
real-time applications on any number and type of computers, such as
desktops, laptops, tablet computers, smartphones, head-mounted
displays and other wearable devices, and/or the like. Further, for
example, rendering scenarios for efficient performance using this
novel technique may range from simple scenarios, such as desktop
compositing, to complex scenarios, such as 3D games, augmented
reality applications, etc.
[0041] System Overview
[0042] FIG. 1 is a block diagram of a processing system 100,
according to an embodiment. In various embodiments the system 100
includes one or more processors 102 and one or more graphics
processors 108, and may be a single processor desktop system, a
multiprocessor workstation system, or a server system having a
large number of processors 102 or processor cores 107. In one
embodiment, the system 100 is a processing platform incorporated
within a system-on-a-chip (SoC) integrated circuit for use in
mobile, handheld, or embedded devices.
[0043] In one embodiment the system 100 can include, or be
incorporated within a server-based gaming platform, a game console,
including a game and media console, a mobile gaming console, a
handheld game console, or an online game console. In some
embodiments the system 100 is a mobile phone, smart phone, tablet
computing device or mobile Internet device. The processing system
100 can also include, couple with, or be integrated within a
wearable device, such as a smart watch wearable device, smart
eyewear device, augmented reality device, or virtual reality
device. In some embodiments, the processing system 100 is a
television or set top box device having one or more processors 102
and a graphical interface generated by one or more graphics
processors 108.
[0044] In some embodiments, the one or more processors 102 each
include one or more processor cores 107 to process instructions
which, when executed, perform operations for system and user
software. In some embodiments, each of the one or more processor
cores 107 is configured to process a specific instruction set 109.
In some embodiments, instruction set 109 may facilitate Complex
Instruction Set Computing (CISC), Reduced Instruction Set Computing
(RISC), or computing via a Very Long Instruction Word (VLIW).
Multiple processor cores 107 may each process a different
instruction set 109, which may include instructions to facilitate
the emulation of other instruction sets. Processor core 107 may
also include other processing devices, such a Digital Signal
Processor (DSP).
[0045] In some embodiments, the processor 102 includes cache memory
104. Depending on the architecture, the processor 102 can have a
single internal cache or multiple levels of internal cache. In some
embodiments, the cache memory is shared among various components of
the processor 102. In some embodiments, the processor 102 also uses
an external cache (e.g., a Level-3 (L3) cache or Last Level Cache
(LLC)) (not shown), which may be shared among processor cores 107
using known cache coherency techniques. A register file 106 is
additionally included in processor 102 which may include different
types of registers for storing different types of data (e.g.,
integer registers, floating point registers, status registers, and
an instruction pointer register). Some registers may be
general-purpose registers, while other registers may be specific to
the design of the processor 102.
[0046] In some embodiments, one or more processor(s) 102 are
coupled with one or more interface bus(es) 110 to transmit
communication signals such as address, data, or control signals
between processor 102 and other components in the system 100. The
interface bus 110, in one embodiment, can be a processor bus, such
as a version of the Direct Media Interface (DMI) bus. However,
processor busses are not limited to the DMI bus, and may include
one or more Peripheral Component Interconnect buses (e.g., PCI, PCI
Express), memory busses, or other types of interface busses. In one
embodiment the processor(s) 102 include an integrated memory
controller 116 and a platform controller hub 130. The memory
controller 116 facilitates communication between a memory device
and other components of the system 100, while the platform
controller hub (PCH) 130 provides connections to I/O devices via a
local I/O bus.
[0047] The memory device 120 can be a dynamic random-access memory
(DRAM) device, a static random-access memory (SRAM) device, flash
memory device, phase-change memory device, or some other memory
device having suitable performance to serve as process memory. In
one embodiment the memory device 120 can operate as system memory
for the system 100, to store data 122 and instructions 121 for use
when the one or more processors 102 executes an application or
process. Memory controller 116 also couples with an optional
external graphics processor 112, which may communicate with the one
or more graphics processors 108 in processors 102 to perform
graphics and media operations. In some embodiments a display device
111 can connect to the processor(s) 102. The display device 111 can
be one or more of an internal display device, as in a mobile
electronic device or a laptop device or an external display device
attached via a display interface (e.g., DisplayPort, etc.). In one
embodiment the display device 111 can be a head mounted display
(HMD) such as a stereoscopic display device for use in virtual
reality (VR) applications or augmented reality (AR)
applications.
[0048] In some embodiments the platform controller hub 130 enables
peripherals to connect to memory device 120 and processor 102 via a
high-speed I/O bus. The I/O peripherals include, but are not
limited to, an audio controller 146, a network controller 134, a
firmware interface 128, a wireless transceiver 126, touch sensors
125, a data storage device 124 (e.g., hard disk drive, flash
memory, etc.). The data storage device 124 can connect via a
storage interface (e.g., SATA) or via a peripheral bus, such as a
Peripheral Component Interconnect bus (e.g., PCI, PCI Express). The
touch sensors 125 can include touch screen sensors, pressure
sensors, or fingerprint sensors. The wireless transceiver 126 can
be a Wi-Fi transceiver, a Bluetooth transceiver, or a mobile
network transceiver such as a 3G, 4G, or Long-Term Evolution (LTE)
transceiver. The firmware interface 128 enables communication with
system firmware, and can be, for example, a unified extensible
firmware interface (UEFI). The network controller 134 can enable a
network connection to a wired network. In some embodiments, a
high-performance network controller (not shown) couples with the
interface bus 110. The audio controller 146, in one embodiment, is
a multi-channel high definition audio controller. In one embodiment
the system 100 includes an optional legacy I/O controller 140 for
coupling legacy (e.g., Personal System 2 (PS/2)) devices to the
system. The platform controller hub 130 can also connect to one or
more Universal Serial Bus (USB) controllers 142 connect input
devices, such as keyboard and mouse 143 combinations, a camera 144,
or other USB input devices.
[0049] It will be appreciated that the system 100 shown is
exemplary and not limiting, as other types of data processing
systems that are differently configured may also be used. For
example, an instance of the memory controller 116 and platform
controller hub 130 may be integrated into a discreet external
graphics processor, such as the external graphics processor 112. In
one embodiment the platform controller hub 130 and/or memory
controller 160 may be external to the one or more processor(s) 102.
For example, the system 100 can include an external memory
controller 116 and platform controller hub 130, which may be
configured as a memory controller hub and peripheral controller hub
within a system chipset that is in communication with the
processor(s) 102.
[0050] FIG. 2 is a block diagram of an embodiment of a processor
200 having one or more processor cores 202A-202N, an integrated
memory controller 214, and an integrated graphics processor 208.
Those elements of FIG. 2 having the same reference numbers (or
names) as the elements of any other figure herein can operate or
function in any manner similar to that described elsewhere herein,
but are not limited to such. Processor 200 can include additional
cores up to and including additional core 202N represented by the
dashed lined boxes. Each of processor cores 202A-202N includes one
or more internal cache units 204A-204N. In some embodiments each
processor core also has access to one or more shared cached units
206.
[0051] The internal cache units 204A-204N and shared cache units
206 represent a cache memory hierarchy within the processor 200.
The cache memory hierarchy may include at least one level of
instruction and data cache within each processor core and one or
more levels of shared mid-level cache, such as a Level 2 (L2),
Level 3 (L3), Level 4 (L4), or other levels of cache, where the
highest level of cache before external memory is classified as the
LLC. In some embodiments, cache coherency logic maintains coherency
between the various cache units 206 and 204A-204N.
[0052] In some embodiments, processor 200 may also include a set of
one or more bus controller units 216 and a system agent core 210.
The one or more bus controller units 216 manage a set of peripheral
buses, such as one or more PCI or PCI express busses. System agent
core 210 provides management functionality for the various
processor components. In some embodiments, system agent core 210
includes one or more integrated memory controllers 214 to manage
access to various external memory devices (not shown).
[0053] In some embodiments, one or more of the processor cores
202A-202N include support for simultaneous multi-threading. In such
embodiment, the system agent core 210 includes components for
coordinating and operating cores 202A-202N during multi-threaded
processing. System agent core 210 may additionally include a power
control unit (PCU), which includes logic and components to regulate
the power state of processor cores 202A-202N and graphics processor
208.
[0054] In some embodiments, processor 200 additionally includes
graphics processor 208 to execute graphics processing operations.
In some embodiments, the graphics processor 208 couples with the
set of shared cache units 206, and the system agent core 210,
including the one or more integrated memory controllers 214. In
some embodiments, the system agent core 210 also includes a display
controller 211 to drive graphics processor output to one or more
coupled displays. In some embodiments, display controller 211 may
also be a separate module coupled with the graphics processor via
at least one interconnect, or may be integrated within the graphics
processor 208.
[0055] In some embodiments, a ring-based interconnect unit 212 is
used to couple the internal components of the processor 200.
However, an alternative interconnect unit may be used, such as a
point-to-point interconnect, a switched interconnect, or other
techniques, including techniques well known in the art. In some
embodiments, graphics processor 208 couples with the ring
interconnect 212 via an I/O link 213.
[0056] The exemplary I/O link 213 represents at least one of
multiple varieties of I/O interconnects, including an on package
I/O interconnect which facilitates communication between various
processor components and a high-performance embedded memory module
218, such as an eDRAM module. In some embodiments, each of the
processor cores 202A-202N and graphics processor 208 use embedded
memory modules 218 as a shared Last Level Cache.
[0057] In some embodiments, processor cores 202A-202N are
homogenous cores executing the same instruction set architecture.
In another embodiment, processor cores 202A-202N are heterogeneous
in terms of instruction set architecture (ISA), where one or more
of processor cores 202A-202N execute a first instruction set, while
at least one of the other cores executes a subset of the first
instruction set or a different instruction set. In one embodiment
processor cores 202A-202N are heterogeneous in terms of
microarchitecture, where one or more cores having a relatively
higher power consumption couple with one or more power cores having
a lower power consumption. Additionally, processor 200 can be
implemented on one or more chips or as an SoC integrated circuit
having the illustrated components, in addition to other
components.
[0058] FIG. 3 is a block diagram of a graphics processor 300, which
may be a discrete graphics processing unit, or may be a graphics
processor integrated with a plurality of processing cores. In some
embodiments, the graphics processor communicates via a memory
mapped I/O interface to registers on the graphics processor and
with commands placed into the processor memory. In some
embodiments, graphics processor 300 includes a memory interface 314
to access memory. Memory interface 314 can be an interface to local
memory, one or more internal caches, one or more shared external
caches, and/or to system memory.
[0059] In some embodiments, graphics processor 300 also includes a
display controller 302 to drive display output data to a display
device 320. Display controller 302 includes hardware for one or
more overlay planes for the display and composition of multiple
layers of video or user interface elements. The display device 320
can be an internal or external display device. In one embodiment
the display device 320 is a head mounted display device, such as a
virtual reality (VR) display device or an augmented reality (AR)
display device. In some embodiments, graphics processor 300
includes a video codec engine 306 to encode, decode, or transcode
media to, from, or between one or more media encoding formats,
including, but not limited to Moving Picture Experts Group (MPEG)
formats such as MPEG-2, Advanced Video Coding (AVC) formats such as
H.264/MPEG-4 AVC, as well as the Society of Motion Picture &
Television Engineers (SMPTE) 421M/VC-1, and Joint Photographic
Experts Group (JPEG) formats such as JPEG, and Motion JPEG (MJPEG)
formats.
[0060] In some embodiments, graphics processor 300 includes a block
image transfer (BLIT) engine 304 to perform two-dimensional (2D)
rasterizer operations including, for example, bit-boundary block
transfers. However, in one embodiment, 2D graphics operations are
performed using one or more components of graphics processing
engine (GPE) 310. In some embodiments, GPE 310 is a compute engine
for performing graphics operations, including three-dimensional
(3D) graphics operations and media operations.
[0061] In some embodiments, GPE 310 includes a 3D pipeline 312 for
performing 3D operations, such as rendering three-dimensional
images and scenes using processing functions that act upon 3D
primitive shapes (e.g., rectangle, triangle, etc.). The 3D pipeline
312 includes programmable and fixed function elements that perform
various tasks within the element and/or spawn execution threads to
a 3D/Media sub-system 315. While 3D pipeline 312 can be used to
perform media operations, an embodiment of GPE 310 also includes a
media pipeline 316 that is specifically used to perform media
operations, such as video post-processing and image
enhancement.
[0062] In some embodiments, media pipeline 316 includes fixed
function or programmable logic units to perform one or more
specialized media operations, such as video decode acceleration,
video de-interlacing, and video encode acceleration in place of, or
on behalf of video codec engine 306. In some embodiments, media
pipeline 316 additionally includes a thread spawning unit to spawn
threads for execution on 3D/Media sub-system 315. The spawned
threads perform computations for the media operations on one or
more graphics execution units included in 3D/Media sub-system
315.
[0063] In some embodiments, 3D/Media subsystem 315 includes logic
for executing threads spawned by 3D pipeline 312 and media pipeline
316. In one embodiment, the pipelines send thread execution
requests to 3D/Media subsystem 315, which includes thread dispatch
logic for arbitrating and dispatching the various requests to
available thread execution resources. The execution resources
include an array of graphics execution units to process the 3D and
media threads. In some embodiments, 3D/Media subsystem 315 includes
one or more internal caches for thread instructions and data. In
some embodiments, the subsystem also includes shared memory,
including registers and addressable memory, to share data between
threads and to store output data.
[0064] Graphics Processing Engine
[0065] FIG. 4 is a block diagram of a graphics processing engine
410 of a graphics processor in accordance with some embodiments. In
one embodiment, the graphics processing engine (GPE) 410 is a
version of the GPE 310 shown in FIG. 3. Elements of FIG. 4 having
the same reference numbers (or names) as the elements of any other
figure herein can operate or function in any manner similar to that
described elsewhere herein, but are not limited to such. For
example, the 3D pipeline 312 and media pipeline 316 of FIG. 3 are
illustrated. The media pipeline 316 is optional in some embodiments
of the GPE 410 and may not be explicitly included within the GPE
410. For example, and in at least one embodiment, a separate media
and/or image processor is coupled to the GPE 410.
[0066] In some embodiments, GPE 410 couples with or includes a
command streamer 403, which provides a command stream to the 3D
pipeline 312 and/or media pipelines 316. In some embodiments,
command streamer 403 is coupled with memory, which can be system
memory, or one or more of internal cache memory and shared cache
memory. In some embodiments, command streamer 403 receives commands
from the memory and sends the commands to 3D pipeline 312 and/or
media pipeline 316. The commands are directives fetched from a ring
buffer, which stores commands for the 3D pipeline 312 and media
pipeline 316. In one embodiment, the ring buffer can additionally
include batch command buffers storing batches of multiple commands.
The commands for the 3D pipeline 312 can also include references to
data stored in memory, such as but not limited to vertex and
geometry data for the 3D pipeline 312 and/or image data and memory
objects for the media pipeline 316. The 3D pipeline 312 and media
pipeline 316 process the commands and data by performing operations
via logic within the respective pipelines or by dispatching one or
more execution threads to a graphics core array 414. In one
embodiment the graphics core array 414 include one or more blocks
of graphics cores (e.g., graphics core(s) 415A, graphics core(s)
415B), each block including one or more graphics cores. Each
graphics core includes a set of graphics execution resources that
includes general-purpose and graphics specific execution logic to
perform graphics and compute operations, as well as fixed function
texture processing and/or machine learning and artificial
intelligence acceleration logic.
[0067] In various embodiments the 3D pipeline 312 includes fixed
function and programmable logic to process one or more shader
programs, such as vertex shaders, geometry shaders, pixel shaders,
fragment shaders, compute shaders, or other shader programs, by
processing the instructions and dispatching execution threads to
the graphics core array 414. The graphics core array 414 provides a
unified block of execution resources for use in processing these
shader programs. Multi-purpose execution logic (e.g., execution
units) within the graphics core(s) 415A-414B of the graphic core
array 414 includes support for various 3D API shader languages and
can execute multiple simultaneous execution threads associated with
multiple shaders.
[0068] In some embodiments the graphics core array 414 also
includes execution logic to perform media functions, such as video
and/or image processing. In one embodiment, the execution units
additionally include general-purpose logic that is programmable to
perform parallel general-purpose computational operations, in
addition to graphics processing operations. The general-purpose
logic can perform processing operations in parallel or in
conjunction with general-purpose logic within the processor core(s)
107 of FIG. 1 or core 202A-202N as in FIG. 2.
[0069] Output data generated by threads executing on the graphics
core array 414 can output data to memory in a unified return buffer
(URB) 418. The URB 418 can store data for multiple threads. In some
embodiments the URB 418 may be used to send data between different
threads executing on the graphics core array 414. In some
embodiments the URB 418 may additionally be used for
synchronization between threads on the graphics core array and
fixed function logic within the shared function logic 420.
[0070] In some embodiments, graphics core array 414 is scalable,
such that the array includes a variable number of graphics cores,
each having a variable number of execution units based on the
target power and performance level of GPE 410. In one embodiment
the execution resources are dynamically scalable, such that
execution resources may be enabled or disabled as needed.
[0071] The graphics core array 414 couples with shared function
logic 420 that includes multiple resources that are shared between
the graphics cores in the graphics core array. The shared functions
within the shared function logic 420 are hardware logic units that
provide specialized supplemental functionality to the graphics core
array 414. In various embodiments, shared function logic 420
includes but is not limited to sampler 421, math 422, and
inter-thread communication (ITC) 423 logic. Additionally, some
embodiments implement one or more cache(s) 425 within the shared
function logic 420.
[0072] A shared function is implemented where the demand for a
given specialized function is insufficient for inclusion within the
graphics core array 414. Instead a single instantiation of that
specialized function is implemented as a stand-alone entity in the
shared function logic 420 and shared among the execution resources
within the graphics core array 414. The precise set of functions
that are shared between the graphics core array 414 and included
within the graphics core array 414 varies across embodiments. In
some embodiments, specific shared functions within the shared
function logic 420 that are used extensively by the graphics core
array 414 may be included within shared function logic 416 within
the graphics core array 414. In various embodiments, the shared
function logic 416 within the graphics core array 414 can include
some or all logic within the shared function logic 420. In one
embodiment, all logic elements within the shared function logic 420
may be duplicated within the shared function logic 416 of the
graphics core array 414. In one embodiment the shared function
logic 420 is excluded in favor of the shared function logic 416
within the graphics core array 414.
[0073] FIG. 5 is a block diagram of hardware logic of a graphics
processor core 500, according to some embodiments described herein.
Elements of FIG. 5 having the same reference numbers (or names) as
the elements of any other figure herein can operate or function in
any manner similar to that described elsewhere herein, but are not
limited to such. The illustrated graphics processor core 500, in
some embodiments, is included within the graphics core array 414 of
FIG. 4. The graphics processor core 500, sometimes referred to as a
core slice, can be one or multiple graphics cores within a modular
graphics processor. The graphics processor core 500 is exemplary of
one graphics core slice, and a graphics processor as described
herein may include multiple graphics core slices based on target
power and performance envelopes. Each graphics core 500 can include
a fixed function block 530 coupled with multiple sub-cores
501A-501F, also referred to as sub-slices, that include modular
blocks of general-purpose and fixed function logic.
[0074] In some embodiments the fixed function block 530 includes a
geometry/fixed function pipeline 536 that can be shared by all
sub-cores in the graphics processor 500, for example, in lower
performance and/or lower power graphics processor implementations.
In various embodiments, the geometry/fixed function pipeline 536
includes a 3D fixed function pipeline (e.g., 3D pipeline 312 as in
FIG. 3 and FIG. 4) a video front-end unit, a thread spawner and
thread dispatcher, and a unified return buffer manager, which
manages unified return buffers, such as the unified return buffer
418 of FIG. 4.
[0075] In one embodiment the fixed function block 530 also includes
a graphics SoC interface 537, a graphics microcontroller 538, and a
media pipeline 539. The graphics SoC interface 537 provides an
interface between the graphics core 500 and other processor cores
within a system on a chip integrated circuit. The graphics
microcontroller 538 is a programmable sub-processor that is
configurable to manage various functions of the graphics processor
500, including thread dispatch, scheduling, and pre-emption. The
media pipeline 539 (e.g., media pipeline 316 of FIG. 3 and FIG. 4)
includes logic to facilitate the decoding, encoding,
pre-processing, and/or post-processing of multimedia data,
including image and video data. The media pipeline 539 implement
media operations via requests to compute or sampling logic within
the sub-cores 501-501F.
[0076] In one embodiment the SoC interface 537 enables the graphics
core 500 to communicate with general-purpose application processor
cores (e.g., CPUs) and/or other components within an SoC, including
memory hierarchy elements such as a shared last level cache memory,
the system RAM, and/or embedded on-chip or on-package DRAM. The SoC
interface 537 can also enable communication with fixed function
devices within the SoC, such as camera imaging pipelines, and
enables the use of and/or implements global memory atomics that may
be shared between the graphics core 500 and CPUs within the SoC.
The SoC interface 537 can also implement power management controls
for the graphics core 500 and enable an interface between a clock
domain of the graphic core 500 and other clock domains within the
SoC. In one embodiment the SoC interface 537 enables receipt of
command buffers from a command streamer and global thread
dispatcher that are configured to provide commands and instructions
to each of one or more graphics cores within a graphics processor.
The commands and instructions can be dispatched to the media
pipeline 539, when media operations are to be performed, or a
geometry and fixed function pipeline (e.g., geometry and fixed
function pipeline 536, geometry and fixed function pipeline 514)
when graphics processing operations are to be performed.
[0077] The graphics microcontroller 538 can be configured to
perform various scheduling and management tasks for the graphics
core 500. In one embodiment the graphics microcontroller 538 can
perform graphics and/or compute workload scheduling on the various
graphics parallel engines within execution unit (EU) arrays
502A-502F, 504A-504F within the sub-cores 501A-501F. In this
scheduling model, host software executing on a CPU core of an SoC
including the graphics core 500 can submit workloads one of
multiple graphic processor doorbells, which invokes a scheduling
operation on the appropriate graphics engine. Scheduling operations
include determining which workload to run next, submitting a
workload to a command streamer, pre-empting existing workloads
running on an engine, monitoring progress of a workload, and
notifying host software when a workload is complete. In one
embodiment the graphics microcontroller 538 can also facilitate
low-power or idle states for the graphics core 500, providing the
graphics core 500 with the ability to save and restore registers
within the graphics core 500 across low-power state transitions
independently from the operating system and/or graphics driver
software on the system.
[0078] The graphics core 500 may have greater than or fewer than
the illustrated sub-cores 501A-501F, up to N modular sub-cores. For
each set of N sub-cores, the graphics core 500 can also include
shared function logic 510, shared and/or cache memory 512, a
geometry/fixed function pipeline 514, as well as additional fixed
function logic 516 to accelerate various graphics and compute
processing operations. The shared function logic 510 can include
logic units associated with the shared function logic 420 of FIG. 4
(e.g., sampler, math, and/or inter-thread communication logic) that
can be shared by each N sub-cores within the graphics core 500. The
shared and/or cache memory 512 can be a last-level cache for the
set of N sub-cores 501A-501F within the graphics core 500, and can
also serve as shared memory that is accessible by multiple
sub-cores. The geometry/fixed function pipeline 514 can be included
instead of the geometry/fixed function pipeline 536 within the
fixed function block 530 and can include the same or similar logic
units.
[0079] In one embodiment the graphics core 500 includes additional
fixed function logic 516 that can include various fixed function
acceleration logic for use by the graphics core 500. In one
embodiment the additional fixed function logic 516 includes an
additional geometry pipeline for use in position only shading. In
position-only shading, two geometry pipelines exist, the full
geometry pipeline within the geometry/fixed function pipeline 516,
536, and a cull pipeline, which is an additional geometry pipeline
which may be included within the additional fixed function logic
516. In one embodiment the cull pipeline is a trimmed down version
of the full geometry pipeline. The full pipeline and the cull
pipeline can execute different instances of the same application,
each instance having a separate context. Position only shading can
hide long cull runs of discarded triangles, enabling shading to be
completed earlier in some instances. For example, and in one
embodiment the cull pipeline logic within the additional fixed
function logic 516 can execute position shaders in parallel with
the main application and generally generates critical results
faster than the full pipeline, as the cull pipeline fetches and
shades only the position attribute of the vertices, without
performing rasterization and rendering of the pixels to the frame
buffer. The cull pipeline can use the generated critical results to
compute visibility information for all the triangles without regard
to whether those triangles are culled. The full pipeline (which in
this instance may be referred to as a replay pipeline) can consume
the visibility information to skip the culled triangles to shade
only the visible triangles that are finally passed to the
rasterization phase.
[0080] In one embodiment the additional fixed function logic 516
can also include machine-learning acceleration logic, such as fixed
function matrix multiplication logic, for implementations including
optimizations for machine learning training or inferencing.
[0081] Within each graphics sub-core 501A-501F includes a set of
execution resources that may be used to perform graphics, media,
and compute operations in response to requests by graphics
pipeline, media pipeline, or shader programs. The graphics
sub-cores 501A-501F include multiple EU arrays 502A-502F,
504A-504F, thread dispatch and inter-thread communication (TD/IC)
logic 503A-503F, a 3D (e.g., texture) sampler 505A-505F, a media
sampler 506A-506F, a shader processor 507A-507F, and shared local
memory (SLM) 508A-508F. The EU arrays 502A-502F, 504A-504F each
include multiple execution units, which are general-purpose
graphics processing units capable of performing floating-point and
integer/fixed-point logic operations in service of a graphics,
media, or compute operation, including graphics, media, or compute
shader programs. The TD/IC logic 503A-503F performs local thread
dispatch and thread control operations for the execution units
within a sub-core and facilitate communication between threads
executing on the execution units of the sub-core. The 3D sampler
505A-505F can read texture or other 3D graphics related data into
memory. The 3D sampler can read texture data differently based on a
configured sample state and the texture format associated with a
given texture. The media sampler 506A-506F can perform similar read
operations based on the type and format associated with media data.
In one embodiment, each graphics sub-core 501A-501F can alternately
include a unified 3D and media sampler. Threads executing on the
execution units within each of the sub-cores 501A-501F can make use
of shared local memory 508A-508F within each sub-core, to enable
threads executing within a thread group to execute using a common
pool of on-chip memory.
[0082] Execution Units
[0083] FIGS. 6A-6B illustrate thread execution logic 600 including
an array of processing elements employed in a graphics processor
core according to embodiments described herein. Elements of FIGS.
6A-6B having the same reference numbers (or names) as the elements
of any other figure herein can operate or function in any manner
similar to that described elsewhere herein, but are not limited to
such. FIG. 6A illustrates an overview of thread execution logic
600, which can include a variant of the hardware logic illustrated
with each sub-core 501A-501F of FIG. 5. FIG. 6B illustrates
exemplary internal details of an execution unit.
[0084] FIGS. 6A-6B illustrate thread execution logic 600 including
an array of processing elements employed in a graphics processor
core according to embodiments described herein. Elements of FIGS.
6A-6B having the same reference numbers (or names) as the elements
of any other figure herein can operate or function in any manner
similar to that described elsewhere herein, but are not limited to
such. FIG. 6A illustrates an overview of thread execution logic
600, which can include a variant of the hardware logic illustrated
with each sub-core 501A-501F of FIG. 5. FIG. 6B illustrates
exemplary internal details of an execution unit.
[0085] As illustrated in FIG. 6A, in some embodiments thread
execution logic 600 includes a shader processor 602, a thread
dispatcher 604, instruction cache 606, a scalable execution unit
array including a plurality of execution units 608A-608N, a sampler
610, a data cache 612, and a data port 614. In one embodiment the
scalable execution unit array can dynamically scale by enabling or
disabling one or more execution units (e.g., any of execution unit
608A, 608B, 608C, 608D, through 608N-1 and 608N) based on the
computational requirements of a workload. In one embodiment the
included components are interconnected via an interconnect fabric
that links to each of the components. In some embodiments, thread
execution logic 600 includes one or more connections to memory,
such as system memory or cache memory, through one or more of
instruction cache 606, data port 614, sampler 610, and execution
units 608A-608N. In some embodiments, each execution unit (e.g.
608A) is a stand-alone programmable general-purpose computational
unit that is capable of executing multiple simultaneous hardware
threads while processing multiple data elements in parallel for
each thread. In various embodiments, the array of execution units
608A-608N is scalable to include any number individual execution
units.
[0086] In some embodiments, the execution units 608A-608N are
primarily used to execute shader programs. A shader processor 602
can process the various shader programs and dispatch execution
threads associated with the shader programs via a thread dispatcher
604. In one embodiment the thread dispatcher includes logic to
arbitrate thread initiation requests from the graphics and media
pipelines and instantiate the requested threads on one or more
execution unit in the execution units 608A-608N. For example, a
geometry pipeline can dispatch vertex, tessellation, or geometry
shaders to the thread execution logic for processing. In some
embodiments, thread dispatcher 604 can also process runtime thread
spawning requests from the executing shader programs.
[0087] In some embodiments, the execution units 608A-608N support
an instruction set that includes native support for many standard
3D graphics shader instructions, such that shader programs from
graphics libraries (e.g., Direct 3D and OpenGL) are executed with a
minimal translation. The execution units support vertex and
geometry processing (e.g., vertex programs, geometry programs,
vertex shaders), pixel processing (e.g., pixel shaders, fragment
shaders) and general-purpose processing (e.g., compute and media
shaders). Each of the execution units 608A-608N is capable of
multi-issue single instruction multiple data (SIMD) execution and
multi-threaded operation enables an efficient execution environment
in the face of higher latency memory accesses. Each hardware thread
within each execution unit has a dedicated high-bandwidth register
file and associated independent thread-state. Execution is
multi-issue per clock to pipelines capable of integer, single and
double precision floating point operations, SIMD branch capability,
logical operations, transcendental operations, and other
miscellaneous operations. While waiting for data from memory or one
of the shared functions, dependency logic within the execution
units 608A-608N causes a waiting thread to sleep until the
requested data has been returned. While the waiting thread is
sleeping, hardware resources may be devoted to processing other
threads. For example, during a delay associated with a vertex
shader operation, an execution unit can perform operations for a
pixel shader, fragment shader, or another type of shader program,
including a different vertex shader.
[0088] Each execution unit in execution units 608A-608N operates on
arrays of data elements. The number of data elements is the
"execution size," or the number of channels for the instruction. An
execution channel is a logical unit of execution for data element
access, masking, and flow control within instructions. The number
of channels may be independent of the number of physical Arithmetic
Logic Units (ALUs) or Floating Point Units (FPUs) for a particular
graphics processor. In some embodiments, execution units 608A-608N
support integer and floating-point data types.
[0089] The execution unit instruction set includes SIMD
instructions. The various data elements can be stored as a packed
data type in a register and the execution unit will process the
various elements based on the data size of the elements. For
example, when operating on a 256-bit wide vector, the 256 bits of
the vector are stored in a register and the execution unit operates
on the vector as four separate 64-bit packed data elements
(Quad-Word (QW) size data elements), eight separate 32-bit packed
data elements (Double Word (DW) size data elements), sixteen
separate 16-bit packed data elements (Word (W) size data elements),
or thirty-two separate 8-bit data elements (byte (B) size data
elements). However, different vector widths and register sizes are
possible.
[0090] In one embodiment one or more execution units can be
combined into a fused execution unit 609A-609N having thread
control logic (607A-607N) that is common to the fused EUs. Multiple
EUs can be fused into an EU group. Each EU in the fused EU group
can be configured to execute a separate SIMD hardware thread. The
number of EUs in a fused EU group can vary according to
embodiments. Additionally, various SIMD widths can be performed
per-EU, including but not limited to SIMD8, SIMD16, and SIMD32.
Each fused graphics execution unit 609A-609N includes at least two
execution units. For example, fused execution unit 609A includes a
first EU 608A, second EU 608B, and thread control logic 607A that
is common to the first EU 608A and the second EU 608B. The thread
control logic 607A controls threads executed on the fused graphics
execution unit 609A, allowing each EU within the fused execution
units 609A-609N to execute using a common instruction pointer
register.
[0091] One or more internal instruction caches (e.g., 606) are
included in the thread execution logic 600 to cache thread
instructions for the execution units. In some embodiments, one or
more data caches (e.g., 612) are included to cache thread data
during thread execution. In some embodiments, a sampler 610 is
included to provide texture sampling for 3D operations and media
sampling for media operations. In some embodiments, sampler 610
includes specialized texture or media sampling functionality to
process texture or media data during the sampling process before
providing the sampled data to an execution unit.
[0092] During execution, the graphics and media pipelines send
thread initiation requests to thread execution logic 600 via thread
spawning and dispatch logic. Once a group of geometric objects has
been processed and rasterized into pixel data, pixel processor
logic (e.g., pixel shader logic, fragment shader logic, etc.)
within the shader processor 602 is invoked to further compute
output information and cause results to be written to output
surfaces (e.g., color buffers, depth buffers, stencil buffers,
etc.). In some embodiments, a pixel shader or fragment shader
calculates the values of the various vertex attributes that are to
be interpolated across the rasterized object. In some embodiments,
pixel processor logic within the shader processor 602 then executes
an application programming interface (API)-supplied pixel or
fragment shader program. To execute the shader program, the shader
processor 602 dispatches threads to an execution unit (e.g., 608A)
via thread dispatcher 604. In some embodiments, shader processor
602 uses texture sampling logic in the sampler 610 to access
texture data in texture maps stored in memory. Arithmetic
operations on the texture data and the input geometry data compute
pixel color data for each geometric fragment, or discards one or
more pixels from further processing.
[0093] In some embodiments, the data port 614 provides a memory
access mechanism for the thread execution logic 600 to output
processed data to memory for further processing on a graphics
processor output pipeline. In some embodiments, the data port 614
includes or couples to one or more cache memories (e.g., data cache
612) to cache data for memory access via the data port.
[0094] As illustrated in FIG. 6B, a graphics execution unit 608 can
include an instruction fetch unit 637, a general register file
array (GRF) 624, an architectural register file array (ARF) 626, a
thread arbiter 622, a send unit 630, a branch unit 632, a set of
SIMD floating point units (FPUs) 634, and in one embodiment a set
of dedicated integer SIMD ALUs 635. The GRF 624 and ARF 626
includes the set of general register files and architecture
register files associated with each simultaneous hardware thread
that may be active in the graphics execution unit 608. In one
embodiment, per thread architectural state is maintained in the ARF
626, while data used during thread execution is stored in the GRF
624. The execution state of each thread, including the instruction
pointers for each thread, can be held in thread-specific registers
in the ARF 626.
[0095] In one embodiment the graphics execution unit 608 has an
architecture that is a combination of Simultaneous Multi-Threading
(SMT) and fine-grained Interleaved Multi-Threading (IMT). The
architecture has a modular configuration that can be fine-tuned at
design time based on a target number of simultaneous threads and
number of registers per execution unit, where execution unit
resources are divided across logic used to execute multiple
simultaneous threads.
[0096] In one embodiment, the graphics execution unit 608 can
co-issue multiple instructions, which may each be different
instructions. The thread arbiter 622 of the graphics execution unit
thread 608 can dispatch the instructions to one of the send unit
630, branch unit 642, or SIMD FPU(s) 634 for execution. Each
execution thread can access 128 general-purpose registers within
the GRF 624, where each register can store 32 bytes, accessible as
a SIMD 8-element vector of 32-bit data elements. In one embodiment,
each execution unit thread has access to 4 Kbytes within the GRF
624, although embodiments are not so limited, and greater or fewer
register resources may be provided in other embodiments. In one
embodiment up to seven threads can execute simultaneously, although
the number of threads per execution unit can also vary according to
embodiments. In an embodiment in which seven threads may access 4
Kbytes, the GRF 624 can store a total of 28 Kbytes. Flexible
addressing modes can permit registers to be addressed together to
build effectively wider registers or to represent strided
rectangular block data structures.
[0097] In one embodiment, memory operations, sampler operations,
and other longer-latency system communications are dispatched via
"send" instructions that are executed by the message passing send
unit 630. In one embodiment, branch instructions are dispatched to
a dedicated branch unit 632 to facilitate SIMD divergence and
eventual convergence.
[0098] In one embodiment the graphics execution unit 608 includes
one or more SIMD floating point units (FPU(s)) 634 to perform
floating-point operations. In one embodiment, the FPU(s) 634 also
support integer computation. In one embodiment the FPU(s) 634 can
SIMD execute up to M number of 32-bit floating-point (or integer)
operations, or SIMD execute up to 2M 16-bit integer or 16-bit
floating-point operations. In one embodiment, at least one of the
FPU(s) provides extended math capability to support high-throughput
transcendental math functions and double precision 64-bit
floating-point. In some embodiments, a set of 8-bit integer SIMD
ALUs 635 are also present, and may be specifically optimized to
perform operations associated with machine learning
computations.
[0099] In one embodiment, arrays of multiple instances of the
graphics execution unit 608 can be instantiated in a graphics
sub-core grouping (e.g., a sub-slice). For scalability, product
architects can choose the exact number of execution units per
sub-core grouping. In one embodiment the execution unit 608 can
execute instructions across a plurality of execution channels. In a
further embodiment, each thread executed on the graphics execution
unit 608 is executed on a different channel.
[0100] FIG. 7 is a block diagram illustrating a graphics processor
instruction formats 700 according to some embodiments. In one or
more embodiment, the graphics processor execution units support an
instruction set having instructions in multiple formats. The solid
lined boxes illustrate the components that are generally included
in an execution unit instruction, while the dashed lines include
components that are optional or that are only included in a sub-set
of the instructions. In some embodiments, instruction format 700
described and illustrated are macro-instructions, in that they are
instructions supplied to the execution unit, as opposed to
micro-operations resulting from instruction decode once the
instruction is processed.
[0101] In some embodiments, the graphics processor execution units
natively support instructions in a 128-bit instruction format 710.
A 64-bit compacted instruction format 730 is available for some
instructions based on the selected instruction, instruction
options, and number of operands. The native 128-bit instruction
format 710 provides access to all instruction options, while some
options and operations are restricted in the 64-bit format 730. The
native instructions available in the 64-bit format 730 vary by
embodiment. In some embodiments, the instruction is compacted in
part using a set of index values in an index field 713. The
execution unit hardware references a set of compaction tables based
on the index values and uses the compaction table outputs to
reconstruct a native instruction in the 128-bit instruction format
710.
[0102] For each format, instruction opcode 712 defines the
operation that the execution unit is to perform. The execution
units execute each instruction in parallel across the multiple data
elements of each operand. For example, in response to an add
instruction the execution unit performs a simultaneous add
operation across each color channel representing a texture element
or picture element. By default, the execution unit performs each
instruction across all data channels of the operands. In some
embodiments, instruction control field 714 enables control over
certain execution options, such as channels selection (e.g.,
predication) and data channel order (e.g., swizzle). For
instructions in the 128-bit instruction format 710 an exec-size
field 716 limits the number of data channels that will be executed
in parallel. In some embodiments, exec-size field 716 is not
available for use in the 64-bit compact instruction format 730.
[0103] Some execution unit instructions have up to three operands
including two source operands, src0 720, src1 722, and one
destination 718. In some embodiments, the execution units support
dual destination instructions, where one of the destinations is
implied. Data manipulation instructions can have a third source
operand (e.g., SRC2 724), where the instruction opcode 712
determines the number of source operands. An instruction's last
source operand can be an immediate (e.g., hard-coded) value passed
with the instruction.
[0104] In some embodiments, the 128-bit instruction format 710
includes an access/address mode field 726 specifying, for example,
whether direct register addressing mode or indirect register
addressing mode is used. When direct register addressing mode is
used, the register address of one or more operands is directly
provided by bits in the instruction.
[0105] In some embodiments, the 128-bit instruction format 710
includes an access/address mode field 726, which specifies an
address mode and/or an access mode for the instruction. In one
embodiment the access mode is used to define a data access
alignment for the instruction. Some embodiments support access
modes including a 16-byte aligned access mode and a 1-byte aligned
access mode, where the byte alignment of the access mode determines
the access alignment of the instruction operands. For example, when
in a first mode, the instruction may use byte-aligned addressing
for source and destination operands and when in a second mode, the
instruction may use 16-byte-aligned addressing for all source and
destination operands.
[0106] In one embodiment, the address mode portion of the
access/address mode field 726 determines whether the instruction is
to use direct or indirect addressing. When direct register
addressing mode is used bits in the instruction directly provide
the register address of one or more operands. When indirect
register addressing mode is used, the register address of one or
more operands may be computed based on an address register value
and an address immediate field in the instruction.
[0107] In some embodiments instructions are grouped based on opcode
712 bit-fields to simplify Opcode decode 740. For an 8-bit opcode,
bits 4, 5, and 6 allow the execution unit to determine the type of
opcode. The precise opcode grouping shown is merely an example. In
some embodiments, a move and logic opcode group 742 includes data
movement and logic instructions (e.g., move (mov), compare (cmp)).
In some embodiments, move and logic group 742 shares the five most
significant bits (MSB), where move (mov) instructions are in the
form of 0000xxxxb and logic instructions are in the form of
0001xxxxb. A flow control instruction group 744 (e.g., call, jump
(jmp)) includes instructions in the form of 0010xxxxb (e.g., 0x20).
A miscellaneous instruction group 746 includes a mix of
instructions, including synchronization instructions (e.g., wait,
send) in the form of 0011xxxxb (e.g., 0x30). A parallel math
instruction group 748 includes component-wise arithmetic
instructions (e.g., add, multiply (mul)) in the form of 0100xxxxb
(e.g., 0x40). The parallel math group 748 performs the arithmetic
operations in parallel across data channels. The vector math group
750 includes arithmetic instructions (e.g., dp4) in the form of
0101xxxxb (e.g., 0x50). The vector math group performs arithmetic
such as dot product calculations on vector operands.
[0108] Graphics Pipeline
[0109] FIG. 8 is a block diagram of another embodiment of a
graphics processor 800. Elements of FIG. 8 having the same
reference numbers (or names) as the elements of any other figure
herein can operate or function in any manner similar to that
described elsewhere herein, but are not limited to such.
[0110] In some embodiments, graphics processor 800 includes a
geometry pipeline 820, a media pipeline 830, a display engine 840,
thread execution logic 850, and a render output pipeline 870. In
some embodiments, graphics processor 800 is a graphics processor
within a multi-core processing system that includes one or more
general-purpose processing cores. The graphics processor is
controlled by register writes to one or more control registers (not
shown) or via commands issued to graphics processor 800 via a ring
interconnect 802. In some embodiments, ring interconnect 802
couples graphics processor 800 to other processing components, such
as other graphics processors or general-purpose processors.
Commands from ring interconnect 802 are interpreted by a command
streamer 803, which supplies instructions to individual components
of the geometry pipeline 820 or the media pipeline 830.
[0111] In some embodiments, command streamer 803 directs the
operation of a vertex fetcher 805 that reads vertex data from
memory and executes vertex-processing commands provided by command
streamer 803. In some embodiments, vertex fetcher 805 provides
vertex data to a vertex shader 807, which performs coordinate space
transformation and lighting operations to each vertex. In some
embodiments, vertex fetcher 805 and vertex shader 807 execute
vertex-processing instructions by dispatching execution threads to
execution units 852A-852B via a thread dispatcher 831.
[0112] In some embodiments, execution units 852A-852B are an array
of vector processors having an instruction set for performing
graphics and media operations. In some embodiments, execution units
852A-852B have an attached L1 cache 851 that is specific for each
array or shared between the arrays. The cache can be configured as
a data cache, an instruction cache, or a single cache that is
partitioned to contain data and instructions in different
partitions.
[0113] In some embodiments, geometry pipeline 820 includes
tessellation components to perform hardware-accelerated
tessellation of 3D objects. In some embodiments, a programmable
hull shader 811 configures the tessellation operations. A
programmable domain shader 817 provides back-end evaluation of
tessellation output. A tessellator 813 operates at the direction of
hull shader 811 and contains special purpose logic to generate a
set of detailed geometric objects based on a coarse geometric model
that is provided as input to geometry pipeline 820. In some
embodiments, if tessellation is not used, tessellation components
(e.g., hull shader 811, tessellator 813, and domain shader 817) can
be bypassed.
[0114] In some embodiments, complete geometric objects can be
processed by a geometry shader 819 via one or more threads
dispatched to execution units 852A-852B, or can proceed directly to
the clipper 829. In some embodiments, the geometry shader operates
on entire geometric objects, rather than vertices or patches of
vertices as in previous stages of the graphics pipeline. If the
tessellation is disabled, the geometry shader 819 receives input
from the vertex shader 807. In some embodiments, geometry shader
819 is programmable by a geometry shader program to perform
geometry tessellation if the tessellation units are disabled.
[0115] Before rasterization, a clipper 829 processes vertex data.
The clipper 829 may be a fixed function clipper or a programmable
clipper having clipping and geometry shader functions. In some
embodiments, a rasterizer and depth test component 873 in the
render output pipeline 870 dispatches pixel shaders to convert the
geometric objects into per pixel representations. In some
embodiments, pixel shader logic is included in thread execution
logic 850. In some embodiments, an application can bypass the
rasterizer and depth test component 873 and access un-rasterized
vertex data via a stream out unit 823.
[0116] The graphics processor 800 has an interconnect bus,
interconnect fabric, or some other interconnect mechanism that
allows data and message passing amongst the major components of the
processor. In some embodiments, execution units 852A-852B and
associated logic units (e.g., L1 cache 851, sampler 854, texture
cache 858, etc.) interconnect via a data port 856 to perform memory
access and communicate with render output pipeline components of
the processor. In some embodiments, sampler 854, caches 851, 858
and execution units 852A-852B each have separate memory access
paths. In one embodiment the texture cache 858 can also be
configured as a sampler cache.
[0117] In some embodiments, render output pipeline 870 contains a
rasterizer and depth test component 873 that converts vertex-based
objects into an associated pixel-based representation. In some
embodiments, the rasterizer logic includes a windower/masker unit
to perform fixed function triangle and line rasterization. An
associated render cache 878 and depth cache 879 are also available
in some embodiments. A pixel operations component 877 performs
pixel-based operations on the data, though in some instances, pixel
operations associated with 2D operations (e.g. bit block image
transfers with blending) are performed by the 2D engine 841, or
substituted at display time by the display controller 843 using
overlay display planes. In some embodiments, a shared L3 cache 875
is available to all graphics components, allowing the sharing of
data without the use of main system memory.
[0118] In some embodiments, graphics processor media pipeline 830
includes a media engine 837 and a video front-end 834. In some
embodiments, video front-end 834 receives pipeline commands from
the command streamer 803. In some embodiments, media pipeline 830
includes a separate command streamer. In some embodiments, video
front-end 834 processes media commands before sending the command
to the media engine 837. In some embodiments, media engine 837
includes thread spawning functionality to spawn threads for
dispatch to thread execution logic 850 via thread dispatcher
831.
[0119] In some embodiments, graphics processor 800 includes a
display engine 840. In some embodiments, display engine 840 is
external to processor 800 and couples with the graphics processor
via the ring interconnect 802, or some other interconnect bus or
fabric. In some embodiments, display engine 840 includes a 2D
engine 841 and a display controller 843. In some embodiments,
display engine 840 contains special purpose logic capable of
operating independently of the 3D pipeline. In some embodiments,
display controller 843 couples with a display device (not shown),
which may be a system integrated display device, as in a laptop
computer, or an external display device attached via a display
device connector.
[0120] In some embodiments, the geometry pipeline 820 and media
pipeline 830 are configurable to perform operations based on
multiple graphics and media programming interfaces and are not
specific to any one application programming interface (API). In
some embodiments, driver software for the graphics processor
translates API calls that are specific to a particular graphics or
media library into commands that can be processed by the graphics
processor. In some embodiments, support is provided for the Open
Graphics Library (OpenGL), Open Computing Language (OpenCL), and/or
Vulkan graphics and compute API, all from the Khronos Group. In
some embodiments, support may also be provided for the Direct3D
library from the Microsoft Corporation. In some embodiments, a
combination of these libraries may be supported. Support may also
be provided for the Open Source Computer Vision Library (OpenCV). A
future API with a compatible 3D pipeline would also be supported if
a mapping can be made from the pipeline of the future API to the
pipeline of the graphics processor.
[0121] Graphics Pipeline Programming
[0122] FIG. 9A is a block diagram illustrating a graphics processor
command format 900 according to some embodiments. FIG. 9B is a
block diagram illustrating a graphics processor command sequence
910 according to an embodiment. The solid lined boxes in FIG. 9A
illustrate the components that are generally included in a graphics
command while the dashed lines include components that are optional
or that are only included in a sub-set of the graphics commands.
The exemplary graphics processor command format 900 of FIG. 9A
includes data fields to identify a client 902, a command operation
code (opcode) 904, and data 906 for the command. A sub-opcode 905
and a command size 908 are also included in some commands.
[0123] In some embodiments, client 902 specifies the client unit of
the graphics device that processes the command data. In some
embodiments, a graphics processor command parser examines the
client field of each command to condition the further processing of
the command and route the command data to the appropriate client
unit. In some embodiments, the graphics processor client units
include a memory interface unit, a render unit, a 2D unit, a 3D
unit, and a media unit. Each client unit has a corresponding
processing pipeline that processes the commands. Once the command
is received by the client unit, the client unit reads the opcode
904 and, if present, sub-opcode 905 to determine the operation to
perform. The client unit performs the command using information in
data field 906. For some commands an explicit command size 908 is
expected to specify the size of the command. In some embodiments,
the command parser automatically determines the size of at least
some of the commands based on the command opcode. In some
embodiments commands are aligned via multiples of a double
word.
[0124] The flow diagram in FIG. 9B illustrates an exemplary
graphics processor command sequence 910. In some embodiments,
software or firmware of a data processing system that features an
embodiment of a graphics processor uses a version of the command
sequence shown to set up, execute, and terminate a set of graphics
operations. A sample command sequence is shown and described for
purposes of example only as embodiments are not limited to these
specific commands or to this command sequence. Moreover, the
commands may be issued as batch of commands in a command sequence,
such that the graphics processor will process the sequence of
commands in at least partially concurrence.
[0125] In some embodiments, the graphics processor command sequence
910 may begin with a pipeline flush command 912 to cause any active
graphics pipeline to complete the currently pending commands for
the pipeline. In some embodiments, the 3D pipeline 922 and the
media pipeline 924 do not operate concurrently. The pipeline flush
is performed to cause the active graphics pipeline to complete any
pending commands. In response to a pipeline flush, the command
parser for the graphics processor will pause command processing
until the active drawing engines complete pending operations and
the relevant read caches are invalidated. Optionally, any data in
the render cache that is marked `dirty` can be flushed to memory.
In some embodiments, pipeline flush command 912 can be used for
pipeline synchronization or before placing the graphics processor
into a low power state.
[0126] In some embodiments, a pipeline select command 913 is used
when a command sequence requires the graphics processor to
explicitly switch between pipelines. In some embodiments, a
pipeline select command 913 is required only once within an
execution context before issuing pipeline commands unless the
context is to issue commands for both pipelines. In some
embodiments, a pipeline flush command 912 is required immediately
before a pipeline switch via the pipeline select command 913.
[0127] In some embodiments, a pipeline control command 914
configures a graphics pipeline for operation and is used to program
the 3D pipeline 922 and the media pipeline 924. In some
embodiments, pipeline control command 914 configures the pipeline
state for the active pipeline. In one embodiment, the pipeline
control command 914 is used for pipeline synchronization and to
clear data from one or more cache memories within the active
pipeline before processing a batch of commands.
[0128] In some embodiments, return buffer state commands 916 are
used to configure a set of return buffers for the respective
pipelines to write data. Some pipeline operations require the
allocation, selection, or configuration of one or more return
buffers into which the operations write intermediate data during
processing. In some embodiments, the graphics processor also uses
one or more return buffers to store output data and to perform
cross thread communication. In some embodiments, the return buffer
state 916 includes selecting the size and number of return buffers
to use for a set of pipeline operations.
[0129] The remaining commands in the command sequence differ based
on the active pipeline for operations. Based on a pipeline
determination 920, the command sequence is tailored to the 3D
pipeline 922 beginning with the 3D pipeline state 930 or the media
pipeline 924 beginning at the media pipeline state 940.
[0130] The commands to configure the 3D pipeline state 930 include
3D state setting commands for vertex buffer state, vertex element
state, constant color state, depth buffer state, and other state
variables that are to be configured before 3D primitive commands
are processed. The values of these commands are determined at least
in part based on the particular 3D API in use. In some embodiments,
3D pipeline state 930 commands are also able to selectively disable
or bypass certain pipeline elements if those elements will not be
used.
[0131] In some embodiments, 3D primitive 932 command is used to
submit 3D primitives to be processed by the 3D pipeline. Commands
and associated parameters that are passed to the graphics processor
via the 3D primitive 932 command are forwarded to the vertex fetch
function in the graphics pipeline. The vertex fetch function uses
the 3D primitive 932 command data to generate vertex data
structures. The vertex data structures are stored in one or more
return buffers. In some embodiments, 3D primitive 932 command is
used to perform vertex operations on 3D primitives via vertex
shaders. To process vertex shaders, 3D pipeline 922 dispatches
shader execution threads to graphics processor execution units.
[0132] In some embodiments, 3D pipeline 922 is triggered via an
execute 934 command or event. In some embodiments, a register write
triggers command execution. In some embodiments execution is
triggered via a `go` or `kick` command in the command sequence. In
one embodiment, command execution is triggered using a pipeline
synchronization command to flush the command sequence through the
graphics pipeline. The 3D pipeline will perform geometry processing
for the 3D primitives. Once operations are complete, the resulting
geometric objects are rasterized and the pixel engine colors the
resulting pixels. Additional commands to control pixel shading and
pixel back end operations may also be included for those
operations.
[0133] In some embodiments, the graphics processor command sequence
910 follows the media pipeline 924 path when performing media
operations. In general, the specific use and manner of programming
for the media pipeline 924 depends on the media or compute
operations to be performed. Specific media decode operations may be
offloaded to the media pipeline during media decode. In some
embodiments, the media pipeline can also be bypassed and media
decode can be performed in whole or in part using resources
provided by one or more general-purpose processing cores. In one
embodiment, the media pipeline also includes elements for
general-purpose graphics processor unit (GPGPU) operations, where
the graphics processor is used to perform SIMD vector operations
using computational shader programs that are not explicitly related
to the rendering of graphics primitives.
[0134] In some embodiments, media pipeline 924 is configured in a
similar manner as the 3D pipeline 922. A set of commands to
configure the media pipeline state 940 are dispatched or placed
into a command queue before the media object commands 942. In some
embodiments, commands for the media pipeline state 940 include data
to configure the media pipeline elements that will be used to
process the media objects. This includes data to configure the
video decode and video encode logic within the media pipeline, such
as encode or decode format. In some embodiments, commands for the
media pipeline state 940 also support the use of one or more
pointers to "indirect" state elements that contain a batch of state
settings.
[0135] In some embodiments, media object commands 942 supply
pointers to media objects for processing by the media pipeline. The
media objects include memory buffers containing video data to be
processed. In some embodiments, all media pipeline states must be
valid before issuing a media object command 942. Once the pipeline
state is configured and media object commands 942 are queued, the
media pipeline 924 is triggered via an execute command 944 or an
equivalent execute event (e.g., register write). Output from media
pipeline 924 may then be post processed by operations provided by
the 3D pipeline 922 or the media pipeline 924. In some embodiments,
GPGPU operations are configured and executed in a similar manner as
media operations.
[0136] Graphics Software Architecture
[0137] FIG. 10 illustrates exemplary graphics software architecture
for a data processing system 1000 according to some embodiments. In
some embodiments, software architecture includes a 3D graphics
application 1010, an operating system 1020, and at least one
processor 1030. In some embodiments, processor 1030 includes a
graphics processor 1032 and one or more general-purpose processor
core(s) 1034. The graphics application 1010 and operating system
1020 each execute in the system memory 1050 of the data processing
system.
[0138] In some embodiments, 3D graphics application 1010 contains
one or more shader programs including shader instructions 1012. The
shader language instructions may be in a high-level shader
language, such as the High Level Shader Language (HLSL) or the
OpenGL Shader Language (GLSL). The application also includes
executable instructions 1014 in a machine language suitable for
execution by the general-purpose processor core 1034. The
application also includes graphics objects 1016 defined by vertex
data.
[0139] In some embodiments, operating system 1020 is a
Microsoft.RTM. Windows.RTM. operating system from the Microsoft
Corporation, a proprietary UNIX-like operating system, or an open
source UNIX-like operating system using a variant of the Linux
kernel. The operating system 1020 can support a graphics API 1022
such as the Direct3D API, the OpenGL API, or the Vulkan API. When
the Direct3D API is in use, the operating system 1020 uses a
front-end shader compiler 1024 to compile any shader instructions
1012 in HLSL into a lower-level shader language. The compilation
may be a just-in-time (JIT) compilation or the application can
perform shader pre-compilation. In some embodiments, high-level
shaders are compiled into low-level shaders during the compilation
of the 3D graphics application 1010. In some embodiments, the
shader instructions 1012 are provided in an intermediate form, such
as a version of the Standard Portable Intermediate Representation
(SPIR) used by the Vulkan API.
[0140] In some embodiments, user mode graphics driver 1026 contains
a back-end shader compiler 1027 to convert the shader instructions
1012 into a hardware specific representation. When the OpenGL API
is in use, shader instructions 1012 in the GLSL high-level language
are passed to a user mode graphics driver 1026 for compilation. In
some embodiments, user mode graphics driver 1026 uses operating
system kernel mode functions 1028 to communicate with a kernel mode
graphics driver 1029. In some embodiments, kernel mode graphics
driver 1029 communicates with graphics processor 1032 to dispatch
commands and instructions.
[0141] IP Core Implementations
[0142] One or more aspects of at least one embodiment may be
implemented by representative code stored on a machine-readable
medium which represents and/or defines logic within an integrated
circuit such as a processor. For example, the machine-readable
medium may include instructions which represent various logic
within the processor. When read by a machine, the instructions may
cause the machine to fabricate the logic to perform the techniques
described herein. Such representations, known as "IP cores," are
reusable units of logic for an integrated circuit that may be
stored on a tangible, machine-readable medium as a hardware model
that describes the structure of the integrated circuit. The
hardware model may be supplied to various customers or
manufacturing facilities, which load the hardware model on
fabrication machines that manufacture the integrated circuit. The
integrated circuit may be fabricated such that the circuit performs
operations described in association with any of the embodiments
described herein.
[0143] FIG. 11A is a block diagram illustrating an IP core
development system 1100 that may be used to manufacture an
integrated circuit to perform operations according to an
embodiment. The IP core development system 1100 may be used to
generate modular, re-usable designs that can be incorporated into a
larger design or used to construct an entire integrated circuit
(e.g., an SOC integrated circuit). A design facility 1130 can
generate a software simulation 1110 of an IP core design in a
high-level programming language (e.g., C/C++). The software
simulation 1110 can be used to design, test, and verify the
behavior of the IP core using a simulation model 1112. The
simulation model 1112 may include functional, behavioral, and/or
timing simulations. A register transfer level (RTL) design 1115 can
then be created or synthesized from the simulation model 1112. The
RTL design 1115 is an abstraction of the behavior of the integrated
circuit that models the flow of digital signals between hardware
registers, including the associated logic performed using the
modeled digital signals. In addition to an RTL design 1115,
lower-level designs at the logic level or transistor level may also
be created, designed, or synthesized. Thus, the particular details
of the initial design and simulation may vary.
[0144] The RTL design 1115 or equivalent may be further synthesized
by the design facility into a hardware model 1120, which may be in
a hardware description language (HDL), or some other representation
of physical design data. The HDL may be further simulated or tested
to verify the IP core design. The IP core design can be stored for
delivery to a 3.sup.rd party fabrication facility 1165 using
non-volatile memory 1140 (e.g., hard disk, flash memory, or any
non-volatile storage medium). Alternatively, the IP core design may
be transmitted (e.g., via the Internet) over a wired connection
1150 or wireless connection 1160. The fabrication facility 1165 may
then fabricate an integrated circuit that is based at least in part
on the IP core design. The fabricated integrated circuit can be
configured to perform operations in accordance with at least one
embodiment described herein.
[0145] FIG. 11B illustrates a cross-section side view of an
integrated circuit package assembly 1170, according to some
embodiments described herein. The integrated circuit package
assembly 1170 illustrates an implementation of one or more
processor or accelerator devices as described herein. The package
assembly 1170 includes multiple units of hardware logic 1172, 1174
connected to a substrate 1180. The logic 1172, 1174 may be
mplemented at least partly in configurable logic or
fixed-functionality logic hardware, and can include one or more
portions of any of the processor co (s), graphics processor(s), or
other ccelerator devices described herein. Each unit of logic 1172,
1174 can be implemented within a semiconductor die and coupled with
the substrate 1180 via an interconnect structure 1173. The
interconnect structure 1173 may be configured to route electrical
signals between the logic 1172, 1174 and the substrate 1180, and
can include interconnects such as, but not limited to bumps or
pillars. In some embodiments, the interconnect structure 1173 may
be configured to route electrical signals such as, for example,
input/output (I/O) signals and/or power or ground signals
associated with the operation of the logic 1172, 1174. In some
embodiments, the substrate 1180 is an epoxy-based laminate
substrate. The package assembly 1170 may include other suitable
types of substrates in other embodiments. The package assembly 1170
can be connected to other electrical devices via a package
interconnect 1183. The package interconnect 1183 may be coupled to
a surface of the substrate 1180 to route electrical signals to
other electrical devices, such as a motherboard, other chipset, or
multi-chip module.
[0146] In some embodiments, the units of logic 1172, 1174 are
electrically coupled with a bridge 1182 that is configured to route
electrical signals between the logic 1172, 1174. The bridge 1182
may be a dense interconnect structure that provides a route for
electrical signals. The bridge 1182 may include a bridge substrate
composed of glass or a suitable semiconductor material. Electrical
routing features can be formed on the bridge substrate to provide a
chip-to-chip connection between the logic 1172, 1174.
[0147] Although two units of logic 1172, 11.74 and a bridge 1182
are illustrated, embodiments described herein may include more or
fewer logic units on one or more dies. The one or more dies may be
connected by zero or more bridges, as the bridge 1182 may be
excluded. when the logic is included on a single die. Alter a y,
multiple dies or units of logic can be connected by one or more
bridges. Additionally, multiple logic units, dies, and bridges can
be connected together in other possible configurations, including
three-dimensional configurations.
[0148] Exemplary System on a Chip Integrated Circuit
[0149] FIGS. 12-14 illustrated exemplary integrated circuits and
associated graphics processors that may be fabricated using one or
more IP cores, according to various embodiments described herein.
In addition to what is illustrated, other logic and circuits may be
included, including additional graphics processors/cores,
peripheral interface controllers, or general-purpose processor
cores.
[0150] FIG. 12 is a block diagram illustrating an exemplary system
on a chip integrated circuit 1200 that may be fabricated using one
or more IP cores, according to an embodiment. Exemplary integrated
circuit 1200 includes one or more application processor(s) 1205
(e.g., CPUs), at least one graphics processor 1210, and may
additionally include an image processor 1215 and/or a video
processor 1220, any of which may be a modular IP core from the same
or multiple different design facilities. Integrated circuit 1200
includes peripheral or bus logic including a USB controller 1225,
UART controller 1230, an SPI/SDIO controller 1235, and an
I.sup.2S/I.sup.2C controller 1240. Additionally, the integrated
circuit can include a display device 1245 coupled to one or more of
a high-definition multimedia interface (HDMI) controller 1250 and a
mobile industry processor interface (MIPI) display interface 1255.
Storage may be provided by a flash memory subsystem 1260 including
flash memory and a flash memory controller. Memory interface may be
provided via a memory controller 1265 for access to SDRAM or SRAM
memory devices. Some integrated circuits additionally include an
embedded security engine 1270.
[0151] FIGS. 13A-13B are block diagrams illustrating exemplary
graphics processors for use within an SoC, according to embodiments
described herein. FIG. 13A illustrates an exemplary graphics
processor 1310 of a system on a chip integrated circuit that may be
fabricated using one or more IP cores, according to an embodiment.
FIG. 13B illustrates an additional exemplary graphics processor
1340 of a system on a chip integrated circuit that may be
fabricated using one or more IP cores, according to an embodiment.
Graphics processor 1310 of FIG. 13A is an example of a low power
graphics processor core. Graphics processor 1340 of FIG. 13B is an
example of a higher performance graphics processor core. Each of
the graphics processors 1310, 1340 can be variants of the graphics
processor 1210 of FIG. 12.
[0152] As shown in FIG. 13A, graphics processor 1310 includes a
vertex processor 1305 and one or more fragment processor(s)
1315A-1315N (e.g., 1315A, 1315B, 1315C, 1315D, through 1315N-1, and
1315N). Graphics processor 1310 can execute different shader
programs via separate logic, such that the vertex processor 1305 is
optimized to execute operations for vertex shader programs, while
the one or more fragment processor(s) 1315A-1315N execute fragment
(e.g., pixel) shading operations for fragment or pixel shader
programs. The vertex processor 1305 performs the vertex processing
stage of the 3D graphics pipeline and generates primitives and
vertex data. The fragment processor(s) 1315A-1315N use the
primitive and vertex data generated by the vertex processor 1305 to
produce a framebuffer that is displayed on a display device. In one
embodiment, the fragment processor(s) 1315A-1315N are optimized to
execute fragment shader programs as provided for in the OpenGL API,
which may be used to perform similar operations as a pixel shader
program as provided for in the Direct 3D API.
[0153] Graphics processor 1310 additionally includes one or more
memory management units (MMUs) 1320A-1320B, cache(s) 1325A-1325B,
and circuit interconnect(s) 1330A-1330B. The one or more MMU(s)
1320A-1320B provide for virtual to physical address mapping for the
graphics processor 1310, including for the vertex processor 1305
and/or fragment processor(s) 1315A-1315N, which may reference
vertex or image/texture data stored in memory, in addition to
vertex or image/texture data stored in the one or more cache(s)
1325A-1325B. In one embodiment the one or more MMU(s) 1320A-1320B
may be synchronized with other MMUs within the system, including
one or more MMUs associated with the one or more application
processor(s) 1205, image processor 1215, and/or video processor
1220 of FIG. 12, such that each processor 1205-1220 can participate
in a shared or unified virtual memory system. The one or more
circuit interconnect(s) 1330A-1330B enable graphics processor 1310
to interface with other IP cores within the SoC, either via an
internal bus of the SoC or via a direct connection, according to
embodiments.
[0154] As shown FIG. 13B, graphics processor 1340 includes the one
or more MMU(s) 1320A-1320B, caches 1325A-1325B, and circuit
interconnects 1330A-1330B of the graphics processor 1310 of FIG.
13A. Graphics processor 1340 includes one or more shader core(s)
1355A-1355N (e.g., 1455A, 1355B, 1355C, 1355D, 1355E, 1355F,
through 1355N-1, and 1355N), which provides for a unified shader
core architecture in which a single core or type or core can
execute all types of programmable shader code, including shader
program code to implement vertex shaders, fragment shaders, and/or
compute shaders. The exact number of shader cores present can vary
among embodiments and implementations. Additionally, graphics
processor 1340 includes an inter-core task manager 1345, which acts
as a thread dispatcher to dispatch execution threads to one or more
shader cores 1355A-1355N and a tiling unit 1358 to accelerate
tiling operations for tile-based rendering, in which rendering
operations for a scene are subdivided in image space, for example
to exploit local spatial coherence within a scene or to optimize
use of internal caches.
[0155] FIGS. 14A-14B illustrate additional exemplary graphics
processor logic according to embodiments described herein. FIG. 14A
illustrates a graphics core 1400 that may be included within the
graphics processor 1210 of FIG. 12, and may be a unified shader
core 1355A-1355N as in FIG. 13B. FIG. 14B illustrates a
highly-parallel general-purpose graphics processing unit 1430
suitable for deployment on a multi-chip module.
[0156] As shown in FIG. 14A, the graphics core 1400 includes a
shared instruction cache 1402, a texture unit 1418, and a
cache/shared memory 1420 that are common to the execution resources
within the graphics core 1400. The graphics core 1400 can include
multiple slices 1401A-1401N or partition for each core, and a
graphics processor can include multiple instances of the graphics
core 1400. The slices 1401A-1401N can include support logic
including a local instruction cache 1404A-1404N, a thread scheduler
1406A-1406N, a thread dispatcher 1408A-1408N, and a set of
registers 1410A. To perform logic operations, the slices
1401A-1401N can include a set of additional function units (AFUs
1412A-1412N), floating-point units (FPU 1414A-1414N), integer
arithmetic logic units (ALUs 1416-1416N), address computational
units (ACU 1413A-1413N), double-precision floating-point units
(DPFPU 1415A-1415N), and matrix processing units (MPU
1417A-1417N).
[0157] Some of the computational units operate at a specific
precision. For example, the FPUs 1414A-1414N can perform
single-precision (32-bit) and half-precision (16-bit) floating
point operations, while the DPFPUs 1415A-1415N perform double
precision (64-bit) floating point operations. The ALUs 1416A-1416N
can perform variable precision integer operations at 8-bit, 16-bit,
and 32-bit precision, and can be configured for mixed precision
operations. The MPUs 1417A-1417N can also be configured for mixed
precision matrix operations, including half-precision floating
point and 8-bit integer operations. The MPUs 1417-1417N can perform
a variety of matrix operations to accelerate machine learning
application frameworks, including enabling support for accelerated
general matrix to matrix multiplication (GEMM). The AFUs
1412A-1412N can perform additional logic operations not supported
by the floating-point or integer units, including trigonometric
operations (e.g., Sine, Cosine, etc.).
[0158] As shown in FIG. 14B, a general-purpose processing unit
(GPGPU) 1430 can be configured to enable highly-parallel compute
operations to be performed by an array of graphics processing
units. Additionally, the GPGPU 1430 can be linked directly to other
instances of the GPGPU to create a multi-GPU cluster to improve
training speed for particularly deep neural networks. The GPGPU
1430 includes a host interface 1432 to enable a connection with a
host processor. In one embodiment the host interface 1432 is a PCI
Express interface. However, the host interface can also be a vendor
specific communications interface or communications fabric. The
GPGPU 1430 receives commands from the host processor and uses a
global scheduler 1434 to distribute execution threads associated
with those commands to a set of compute clusters 1436A-1436H. The
compute clusters 1436A-1436H share a cache memory 1438. The cache
memory 1438 can serve as a higher-level cache for cache memories
within the compute clusters 1436A-1436H.
[0159] The GPGPU 1430 includes memory 1434A-1434B coupled with the
compute clusters 1436A-1436H via a set of memory controllers
1442A-1442B. In various embodiments, the memory 1434A-1434B can
include various types of memory devices including dynamic random
access memory (DRAM) or graphics random access memory, such as
synchronous graphics random access memory (SGRAM), including
graphics double data rate (GDDR) memory.
[0160] In one embodiment the compute clusters 1436A-1436H each
include a set of graphics cores, such as the graphics core 1400 of
FIG. 14A, which can include multiple types of integer and floating
point logic units that can perform computational operations at a
range of precisions including suited for machine learning
computations. For example, and in one embodiment at least a subset
of the floating point units in each of the compute clusters
1436A-1436H can be configured to perform 16-bit or 32-bit floating
point operations, while a different subset of the floating point
units can be configured to perform 64-bit floating point
operations.
[0161] Multiple instances of the GPGPU 1430 can be configured to
operate as a compute cluster. The communication mechanism used by
the compute cluster for synchronization and data exchange varies
across embodiments. In one embodiment the multiple instances of the
GPGPU 1430 communicate over the host interface 1432. In one
embodiment the GPGPU 1430 includes an I/O hub 1439 that couples the
GPGPU 1430 with a GPU link 1440 that enables a direct connection to
other instances of the GPGPU. In one embodiment the GPU link 1440
is coupled to a dedicated GPU-to-GPU bridge that enables
communication and synchronization between multiple instances of the
GPGPU 1430. In one embodiment the GPU link 1440 couples with a high
speed interconnect to transmit and receive data to other GPGPUs or
parallel processors. In one embodiment the multiple instances of
the GPGPU 1430 are located in separate data processing systems and
communicate via a network device that is accessible via the host
interface 1432. In one embodiment the GPU link 1440 can be
configured to enable a connection to a host processor in addition
to or as an alternative to the host interface 1432.
[0162] While the illustrated configuration of the GPGPU 1430 can be
configured to train neural networks, one embodiment provides
alternate configuration of the GPGPU 1430 that can be configured
for deployment within a high performance or low power inferencing
platform. In an inferencing configuration the GPGPU 1430 includes
fewer of the compute clusters 1436A-1436H relative to the training
configuration. Additionally, the memory technology associated with
the memory 1434A-1434B may differ between inferencing and training
configurations, with higher bandwidth memory technologies devoted
to training configurations. In one embodiment the inferencing
configuration of the GPGPU 1430 can support inferencing specific
instructions. For example, an inferencing configuration can provide
support for one or more 8-bit integer dot product instructions,
which are commonly used during inferencing operations for deployed
neural networks.
[0163] Immersive Video Overview
[0164] FIG. 15A illustrates multiple forms of immersive video.
Immersive video can be presented in multiple forms depending on the
degrees of freedom available to a viewer. Degrees of freedom refers
to the number of different directions that an object can move in
three-dimensional (3D) space. Immersive video can be viewed via a
head mounted display that includes tracking for position and
orientation. Example forms of immersive video include 3DoF 1502,
3DoF Plus 1504, and full 6DoF 1506. In addition to immersive video
in full 6DoF 1506, 6DOF immersive video includes omni-directional
6DoF 1507, and windowed 6DoF 1508.
[0165] For video in 3DoF 1502 (e.g., 360-degree video), a viewer
can change orientation (e.g., yaw, pitch, roll) but not position.
For video in 3DoF Plus 1504, a viewer can change orientation and
make small change to changes to position. For video in 6DoF 1506, a
viewer can change orientation and change position. More limited
forms of 6DoF video are also available. Video in omni-directional
6DoF 1507 enables a viewer being able to take multiple steps in the
virtual scene. Video in windowed 6DoF 1508 allows a viewer to
change orientation and position, but the viewers is constrained to
a limited view area. Increasing the available degrees of freedom in
an immersive video generally includes increasing the amount and
complexity of data involved in video generation, encode, decode,
and playback.
[0166] FIG. 15B illustrates image projection and texture planes for
immersive video. A 3D view 1510 of video content can be generated
using data from multiple cameras. Multiple projection planes 1512
can be used to generate geometry data for video content. Multiple
texture planes 1514 can be derived for the projection planes 1512
used to generate the geometry data. The texture planes 1514 can be
applied to 3D models that are pre-generated or generated based on a
point cloud derived from video data. The multiple projection planes
1512 can be used to generate multiple two-dimensional (2D)
projections, each projection associated with a projection
plane.
[0167] FIG. 16 illustrates a client-server system by which
immersive video content can be generated and encoded by a server
1620 infrastructure for transmission to one or more client 1630
devices. The client 1630 devices can then decompress and render the
immersive video content. In one embodiment, one or more server 1620
devices can include inputs from one or more optical cameras 1601
having depth sensors 1602. Parallel compute 1604 resources can
decompose the video and depth data into point clouds 1605 and/or
texture triangles 1606. Data to generate textured triangles 1606
can also be provided by pre-generated 3D models 1603 of a scene.
The point clouds 1605 and/or textured triangles 1606 can be
compressed for transmission to one or more client devices, which
can locally render the content. In one embodiment, a variety of
compression units 1607, 1608, using a variety of compression
algorithms, can compressed generated content for transmission over
a delivery medium from the server 1620 to one or more client 1630
devices. Decompression units 1609, 1610 on the client 1630 devices
can decompress and decode incoming bitstreams into video/texture
and geometry data. For example, decompression unit 1609 can decode
compressed point cloud data and provide the decompressed point
cloud data to a viewpoint interpolation unit 1611. The interpolated
viewpoint data can be used to generate bitmap data 1613. The
decompressed point cloud data can be provided to a geometry
reconstruction unit 1612 to reconstruct geometry data for a scene.
The reconstructed geometry data can be textured by decoded texture
data (textured triangles 1614) to generate a 3D rendering 1616 for
viewing by the client 1630.
[0168] FIGS. 17A-17B illustrate systems 1700, 1710 for encoding and
decoding 3DoF Plus content. System 1700 can be implemented by
hardware and software of a server 1620 infrastructure, for example,
as in FIG. 16. System 1710 can be implemented by hardware and
software of a client 1630 as in FIG. 16.
[0169] As shown in FIG. 17A, a system 1700 can be used to encode
video data 1702 for a base view 1701 and video data 1705A-1705C for
additional views 1704. Multiple cameras can provide input data
including video data and depth data, where each frame of video data
can be converted into a texture. A set of reprojection 1706 and
occlusion detection 1707 units can operate on received video data
and output processed data to patch formation 1708 units. Patches
formed by the patch formation 1708 units can be provided to a patch
packing 1709 unit. Video data 1702 for the base view 1701 can be
encoded, for example, via a high efficiency video coding (HEVC)
encoder 1703A. A variant of the HEVC encoder 1703A can also be used
to encode patch video data output from the patch packing 1709 unit.
Metadata to reconstruct video from the encoded patches can be
encoded by a metadata encode 1703B unit. Multiple encoded video and
metadata streams can then be transmitted to a client device for
viewing.
[0170] As shown in FIG. 17B, multiple streams of video data can be
received, decoded, and reconstructed into immersive video by system
1710. The multiple streams of video include a stream for the base
video, along with a stream containing packed data for the
additional views. Encoded metadata is also received. The multiple
video streams can be decoded, in one embodiment, via an HEVC 1713A
decoder. Metadata can be decoded via a metadata 1713B decoder. The
decoded metadata is then used to unpack the decoded additional
views via patch un-packing 1719 logic. Decoded texture and depth
data (video 0 1712, video 1-3 1714A-1715C) of the base view 1701
and the additional views 1704 are reconstructed by view generation
logic 1718 on the client (e.g., client 1630 as in FIG. 16). The
decoded video 1712, 1715A-1715C can be provided as texture and
depth data to an intermediate view renderer 1714 that can be used
to render intermediate views for a head mounted display 1711. Head
mounted display position information 1716 is provided as feedback
to the intermediate view renderer 1714, which can render updated
views for the displayed viewport presented via the head mounted
display 1711.
[0171] FIG. 18A-18B illustrate a system for encoding and decoding
6DoF textured geometry data. FIG. 18A shows a 6DoF textured
geometry encoding system 1800. FIG. 18B shows a 6DoF textured
geometry decoding system 1820. 6DoF textured geometry encoding and
decoding can be used to enable a variant of 6DoF immersive video in
which video data is applied as a texture to geometry data, allowing
new intermediate views to be rendered based on the position and
orientation of a head mounted display. Data recorded by multiple
video cameras can be combined with 3D models, particularly for
static objects.
[0172] As shown in FIG. 18A, a 6DoF textured geometry encoding
system 1800 can receive video data 1802 for a base view and video
data 1805A-1805C for additional views. The video data 1802,
1805A-1805C includes texture and depth data that can be processed
by a reprojection and occlusion detection unit 1806. Output from
the reprojection and occlusion detection unit 1806 can be provided
to a patch decomposition unit 1807 and a geometry image generator
1808. Output from the patch decomposition unit 1807 is provided to
a patch packing unit 1809 and an auxiliary patch information
compressor 1813. The auxiliary patch information (patch-info)
provides information used to reconstruct patches of video texture
and depth data. The patch packing unit 1809 outputs packed patch
data to the geometry image generator 1808, a texture image
generator 1810, an attribute image generator 1811, and an occupancy
map compressor 1812.
[0173] The geometry image generator 1808, texture image generator
1810, and attribute image generator 1811 output data to a video
compressor 1814. The geometry image generator 1808 can receive
input from the reprojection and occlusion detection unit 1806,
patch decomposition unit 1807, and patch packing unit 1809 and
generates geometry image data. The texture image generator 1810 can
receive packed patch data from the patch packing unit 1809 and
video texture and depth data from the reprojection and occlusion
detection unit 1806. The attribute image generator 1811 generates
an attribute image from video texture and depth data received from
the reprojection and occlusion detection unit 1806 and patched
patch data received from the patch packing unit 1809.
[0174] An occupancy map can be generated by an occupancy map
compressor 1812 based on packed patch data output from the patch
packing unit 1809. Auxiliary patch information can be generated by
the auxiliary patch information compressor 1813. Compressed
occupancy map and auxiliary patch information data can be
multiplexed into a compressed bitstream 1816 by a multiplexer 1815
along with compressed and/or encoded video data output from the
video compressor 1814. The compressed video data output from the
video compressor 1814 includes compressed geometry image data,
texture image data, and attribute image data. The compressed
bitstream 1816 can be stored or provided to a client device for
decompression and viewing.
[0175] As shown in FIG. 18B, a 6DoF textured geometry decoding
system 1820 can be used to decode 6DoF content generated using the
encoding system 1800 of FIG. 18A. The compressed bitstream 1816 is
received and demultiplexed by a demultiplexer 1835 into multiple
video decode streams, an occupancy map, and auxiliary patch
information. The multiple video streams are decoded/decompressed by
video decoders 1834A-1834B. Occupancy map data is
decoded/decompressed by an occupancy map decoder 1832. The decoded
video data and occupancy map data are output by the video decoders
1834A-1834B and the occupancy map decoder 1832 to an unpacking unit
1829. The unpacking unit unpacks video patch data that is packed by
the patch packing unit 1809 of FIG. 18A. Auxiliary patch
information from the auxiliary patch-info decoder 1833 is provided
to an occlusion filling unit 1826, which can be used to fill in
patches from occluded portions of an object that may be missing
from a particular view of the video data. Respective video streams
1822, 1825A-1825C having texture and depth data are output from the
occlusion filling unit 1826 and provided to an intermediate view
renderer 1823, which can render a view for display on a head
mounted display 1824 based on position and orientation information
provided by the head mounted display 1824.
[0176] FIG. 19A-19B illustrate a system for encoding and decoding
6DoF point cloud data. FIG. 19A illustrates a 6DoF point cloud
encoding system 1900. FIG. 19B illustrates a 6DoF point cloud
decoding system 1920. 6DoF video can be represented using point
clouds, where for a point cloud video sequence, at regular time
intervals (e.g., 60 Hz) there is a new point cloud frame. Each
point in the point cloud data frame is represented by six
parameters: (X, Y, Z) geometry position and (R, G, B or Y, U, V)
texture data. In the encoding system 1900 of FIG. 19A, a point
cloud frame is projected onto several two-dimensional (2D) planes,
each 2D plane corresponding to a projection angle. The projection
planes can be similar to the projection planes 1512 of FIG. 15B. In
some implementations, six projection angles are used in the PCC
standard test model, with the projection angles corresponding to
angles pointing to the centers of six faces of a rectangular solid
that bound the object represented by the point cloud data. While
six projection angles are described, other number of angles could
possibly be used in different implementations.
[0177] Texture and depth 2D image patch representations are formed
at each projection angle. The 2D patch image representations for a
projection angle can be created by projecting only those points for
which a projection angle has the closest normal. In other words,
the 2D patch image representation is taken for the points that
maximize the dot product of the point normal and the plane normal.
Texture patches from the separate projections are combined into a
single texture image, which is referred to as the geometry image.
Metadata to represent the patches and how they were packed into a
frame are described in the occupancy map and auxiliary patch info.
The occupancy map metadata includes an indication of which image
sample positions are empty (e.g., do not contain corresponding
point cloud information). The auxiliary patch info indicates the
projection plane to which a patch belongs and can be used to
determine a projection plane associated with a given sample
position. The texture images and depth images are encoded using a
2D conventional video encoder, such as a high efficiency video
coding (HEVC) encoder. The metadata can be separately compressed
using metadata encoding logic. In the test model decoder, the
texture images and depth images are decoded using an HEVC video
decoder. A point cloud is reconstructed, using the decoded texture
and depth images, along with the occupancy map and auxiliary patch
info metadata.
[0178] As shown in FIG. 19A, an input frame of point cloud data can
be decomposed into patch data. The point cloud data and decomposed
patch data can be encoded in a similar manner as video texture and
depth data in FIG. 18A. Input data including a point cloud frame
1906 can be provided to a patch decomposition unit 1907. The input
point cloud data and decomposed patches thereof can be processed by
a packing unit 1909, geometry image generator 1908, texture image
generator 1910, attribute image generator 1911, occupancy map
compressor 1912, and auxiliary patch information compressor 1913
using techniques similar to the processing of texture depth and
video data output by the reprojection and occlusion detection unit
1806 and patch decomposition unit 1807 of FIG. 18A. A video
compressor 1914 can encode and/or compress geometry image, texture
image, and attribute image data. The compressed and/or encoded
video data from the video compressor 1914 can be multiplexed by a
multiplexer 1915 with occupancy map and auxiliary patch information
data into a compressed bitstream 1916, which can be stored or
transmitted for display.
[0179] The compressed bitstream output by the system 1900 of FIG.
19A can be decoded by the point cloud decoding system 1920 shown in
FIG. 19B. As shown in FIG. 19B, a compressed bitstream 1916 can be
demultiplexed into multiple encoded/compressed video streams,
occupancy map data, and auxiliary patch information. The video
streams can be decoded/decompressed by a multi-stream video decoder
1934, which can output texture and geometry data. Occupancy map and
auxiliary patch information can be decompressed/decoded by an
occupancy map decoder 1932 and an auxiliary patch information
decoder 1933.
[0180] Geometry reconstruction, smoothing, and texture
reconstruction can then be performed to reconstruct the point cloud
data provided to the 6DoF point cloud encoding system 1900 of FIG.
19A. A geometry reconstruction unit 1936 can reconstruct geometry
information based on geometry data decoded from a video stream of
the multi-stream video decoder 1934, as well as output of the
occupancy map decoder 1932 and auxiliary patch information decoder
1933. Reconstructed geometry data can be smoothed by a smoothing
unit 1937. Smoothed geometry and texture image data decoded from a
video stream output by the multi-stream video decoder 1934 is
provided to a texture reconstruction unit 1938. The texture
reconstruction unit 1938 can output a reconstructed point cloud
1939, which is a variant of the input point cloud frame 1926
provided to the 6DoF point cloud encoding system 1900 of FIG.
19A.
[0181] FIG. 20 illustrates a computing device 2000 hosting an
enhanced construction pipeline mechanism ("construction pipeline
mechanism") 2010 according to one embodiment. Computing device 2000
represents a communication and data processing device including
(but not limited to) smart wearable devices, smartphones, virtual
reality (VR) devices, head-mounted display (HMDs), mobile
computers, Internet of Things (IoT) devices, laptop computers,
desktop computers, server computers, etc., and be similar to or the
same as processing device 100 of FIG. 1; accordingly, for brevity,
clarity, and ease of understanding, many of the details stated
above with reference to FIGS. 1-19B are not further discussed or
repeated hereafter.
[0182] Computing device 2000 may further include (without
limitations) an autonomous machine or an artificially intelligent
agent, such as a mechanical agent or machine, an electronics agent
or machine, a virtual agent or machine, an electro-mechanical agent
or machine, etc. Examples of autonomous machines or artificially
intelligent agents may include (without limitation) robots,
autonomous vehicles (e.g., self-driving cars, self-flying planes,
self-sailing boats, etc.), autonomous equipment (self-operating
construction vehicles, self-operating medical equipment, etc.),
and/or the like. Throughout this document, "computing device" may
be interchangeably referred to as "autonomous machine" or
"artificially intelligent agent" or simply "robot".
[0183] It contemplated that although "autonomous vehicle" and
"autonomous driving" are referenced throughout this document,
embodiments are not limited as such. For example, "autonomous
vehicle" is not limed to an automobile but that it may include any
number and type of autonomous machines, such as robots, autonomous
equipment, household autonomous devices, and/or the like, and any
one or more tasks or operations relating to such autonomous
machines may be interchangeably referenced with autonomous
driving.
[0184] Computing device 2000 may further include (without
limitations) large computing systems, such as server computers,
desktop computers, etc., and may further include set-top boxes
(e.g., Internet-based cable television set-top boxes, etc.), global
positioning system (GPS)-based devices, etc. Computing device 2000
may include mobile computing devices serving as communication
devices, such as cellular phones including smartphones, personal
digital assistants (PDAs), tablet computers, laptop computers,
e-readers, smart televisions, television platforms, wearable
devices (e.g., glasses, watches, bracelets, smartcards, jewelry,
clothing items, etc.), media players, etc. For example, in one
embodiment, computing device 600 may include a mobile computing
device employing a computer platform hosting an integrated circuit
("IC"), such as system on a chip ("SoC" or "SOC"), integrating
various hardware and/or software components of computing device
2000 on a single chip.
[0185] As illustrated, in one embodiment, computing device 2000 may
include any number and type of hardware and/or software components,
such as (without limitation) graphics processing unit ("GPU" or
simply "graphics processor") 2014, graphics driver (also referred
to as "GPU driver", "graphics driver logic", "driver logic",
user-mode driver (UMD), UMD, user-mode driver framework (UMDF),
UMDF, or simply "driver") 2016, central processing unit ("CPU" or
simply "application processor") 2012, memory 2008, network devices,
drivers, or the like, as well as input/output (I/O) source(s) 2004,
such as touchscreens, touch panels, touch pads, virtual or regular
keyboards, virtual or regular mice, ports, connectors, etc.
Computing device 2000 may include operating system (OS) 2006
serving as an interface between hardware and/or physical resources
of the computer device 2000 and a user. It is contemplated that
graphics processor 2014 and application processor 2012 may be one
or more of processor(s) 102 of FIG. 1.
[0186] It is to be appreciated that a lesser or more equipped
system than the example described above may be preferred for
certain implementations. Therefore, the configuration of computing
device 2000 may vary from implementation to implementation
depending upon numerous factors, such as price constraints,
performance requirements, technological improvements, or other
circumstances.
[0187] Embodiments may be implemented as any or a combination of:
one or more microchips or integrated circuits interconnected using
a parentboard, hardwired logic, software stored by a memory device
and executed by a microprocessor, firmware, an application specific
integrated circuit (ASIC), and/or a field programmable gate array
(FPGA). The terms "logic", "module", "component", "engine",
"mechanism", "tool", "circuit", and "circuitry" are referenced
interchangeably throughout this document and include, by way of
example, software, hardware, firmware, or any combination
thereof.
[0188] In one embodiment, as illustrated, construction pipeline
mechanism 2010 may be hosted by memory 2008 of computing device
2000. In another embodiment, construction pipeline mechanism 2010
may be hosted by operating system 2006 or graphics driver 2016. In
yet another embodiment, construction pipeline mechanism 2010 may be
hosted by or part of graphics processing unit ("GPU" or simply
graphics processor") 2014 or firmware of graphics processor 2014.
For example, construction pipeline mechanism 2010 may be embedded
in or implemented as part of the processing hardware of graphics
processor 2014. Similarly, in yet another embodiment, construction
pipeline mechanism 2010 may be hosted by or part of central
processing unit ("CPU" or simply "application processor") 2012. For
example, construction pipeline mechanism 2010 may be embedded in or
implemented as part of the processing hardware of application
processor 2012.
[0189] In yet another embodiment, construction pipeline mechanism
2010 may be hosted by or part of any number and type of components
of computing device 2000, such as a portion of construction
pipeline mechanism 2010 may be hosted by or part of operating
system 2006, another portion may be hosted by or part of graphics
processor 2014, another portion may be hosted by or part of
application processor 2012, while one or more portions of
construction pipeline mechanism 2010 may be hosted by or part of
operating system 2006 and/or any number and type of devices of
computing device 2000. It is contemplated that embodiments are not
limited to any implementation or hosting of construction pipeline
mechanism 2010 and that one or more portions or components of
construction pipeline mechanism 2010 may be employed or implemented
as hardware, software, or any combination thereof, such as
firmware.
[0190] Computing device 2000 may host network interface(s) to
provide access to a network, such as a LAN, a wide area network
(WAN), a metropolitan area network (MAN), a personal area network
(PAN), Bluetooth, a cloud network, a mobile network (e.g., 3.sup.rd
Generation (3G), 4.sup.th Generation (4G), etc.), an intranet, the
Internet, etc. Network interface(s) may include, for example, a
wireless network interface having antenna, which may represent one
or more antenna(e). Network interface(s) may also include, for
example, a wired network interface to communicate with remote
devices via network cable, which may be, for example, an Ethernet
cable, a coaxial cable, a fiber optic cable, a serial cable, or a
parallel cable.
[0191] Embodiments may be provided, for example, as a computer
program product which may include one or more machine-readable
media having stored thereon machine-executable instructions that,
when executed by one or more machines such as a computer, network
of computers, or other electronic devices, may result in the one or
more machines carrying out operations in accordance with
embodiments described herein. A machine-readable medium may
include, but is not limited to, floppy diskettes, optical disks,
CD-ROMs (Compact Disc-Read Only Memories), and magneto-optical
disks, ROMs, RAMs, EPROMs (Erasable Programmable Read Only
Memories), EEPROMs (Electrically Erasable Programmable Read Only
Memories), magnetic or optical cards, flash memory, or other type
of media/machine-readable medium suitable for storing
machine-executable instructions.
[0192] Moreover, embodiments may be downloaded as a computer
program product, wherein the program may be transferred from a
remote computer (e.g., a server) to a requesting computer (e.g., a
client) by way of one or more data signals embodied in and/or
modulated by a carrier wave or other propagation medium via a
communication link (e.g., a modem and/or network connection).
[0193] Throughout the document, term "user" may be interchangeably
referred to as "viewer", "observer", "person", "individual",
"end-user", and/or the like. It is to be noted that throughout this
document, terms like "graphics domain" may be referenced
interchangeably with "graphics processing unit", "graphics
processor", or simply "GPU" and similarly, "CPU domain" or "host
domain" may be referenced interchangeably with "computer processing
unit", "application processor", or simply "CPU".
[0194] It is to be noted that terms like "node", "computing node",
"server", "server device", "cloud computer", "cloud server", "cloud
server computer", "machine", "host machine", "device", "computing
device", "computer", "computing system", and the like, may be used
interchangeably throughout this document. It is to be further noted
that terms like "application", "software application", "program",
"software program", "package", "software package", and the like,
may be used interchangeably throughout this document. Also, terms
like "job", "input", "request", "message", and the like, may be
used interchangeably throughout this document.
[0195] FIG. 21 illustrates enhanced immersive media construction
pipeline mechanism 2010 of FIG. 20 and enhanced immersive media
render pipeline mechanism 2160 according to one embodiment. For
brevity, many of the details already discussed with reference to
FIGS. 1-20 are not repeated or discussed hereafter. In one
embodiment, construction pipeline mechanism 2010 may include any
number and type of components, such as (but not limited to):
detection and selection logic 2101; semantic data extraction logic
("extraction logic") 2103; model formation logic 2105;
communication/compatibility logic 2107; encoding logic 2109; and
codebook and classification logic 2111.
[0196] As illustrated, in one embodiment, computing device 2000
(also referred to as "server computer" or "construction device") on
the capture-side or construction-side is in communication with
another computing device 2150 (also referred to as "client
computer" or "render device") on the render-side, where render
device 2150 includes memory 2158 hosting enhanced immersive media
render pipeline mechanism ("render pipeline mechanism") 2160 having
any number and type of components, such as (but not limited to):
detection and reception logic 2161; decoding logic 2163; semantic
data interpretation logic ("interpretation logic") 2165; correction
and rendering logic 2167; and communication/display logic 2169.
Render device 2150 further includes graphics processor 2154 and
application processor 2152 in communication with memory 2158 to
execute render pipeline mechanism 2160, where render device 2150
further includes user interface 2159, and I/O component(s) 2156,
such as a display device for display for displaying immersive
media, such as 3DoF+ video, 6DoF video, etc.
[0197] Construction device 2000 is further shown to be in
communication with one or more repositories, datasets, and/or
databases, such as database(s) 2030 (e.g., cloud storage, non-cloud
storage, etc.), where database(s) 2030 may reside at a local
storage or a remote storage over communication medium(s) 2025, such
as one or more networks (e.g., cloud network, proximity network,
mobile network, intranet, Internet, etc.).
[0198] It is contemplated that a software application running at
computing device 2000 may be responsible for performing or
facilitating performance of any number and type of tasks using one
or more components (e.g., GPU 2014, graphics driver 2016, CPU 2012,
etc.) of computing device 2000. When performing such tasks, as
defined by the software application, one or more components, such
as GPU 2014, graphics driver 2016, CPU 2012, etc., may communicate
with each other to ensure accurate and timely processing and
completion of those tasks
[0199] Embodiments provide for a novel technique, as facilitated by
enhanced pipeline mechanism 2010, to extract, interpret, and apply
semantic information for correction of artifacts, clarity of
objects, and/or the like. In one embodiment, like a texture map,
semantic information may be extracted or generated and sent during
capture and construction to aid with correction of artifacts on the
render side. Further, this semantic information may be predicted at
capture side and sent as metadata to normalize colors and textures
at the render side. For example, semantic information may include
(but not be limited to) lighting properties, sound properties,
semantic labeling of objects and/or persons, etc.
[0200] Embodiments further provide for a novel technique for
assigning texture boundaries based on recognition of objects in a
scene. For example, an object (e.g., human face) may be detected,
recognized, and assigned texture boundaries based on its
recognition to avoid putting boundaries over the face or any
critical region of an entity where errors will be extra
visible.
[0201] Embodiments further provide for a novel technique for
enhancing construction of point cloud by fusing AI-based image
object classification and segmentation. In one embodiment, codebook
stitch object properties may be used to enhance clarity of objects
at render time, where object properties may include (but not be
limited to) matte, glossiness, texture, etc., through enhanced
communication between a construction side and a render side.
[0202] In one embodiment, enhanced pipeline mechanism 2010 may be
executed by one or more processing devices, such as one or more of
graphics processor 2014 and application processor 1512, etc., to
provide one or more additional processing blocks to enhance an
encoding and decoding pipeline ("immersive media pipeline") for
immersive media experiences, such as involving 3DoF+ immersive
video, 6DoF immersive video, etc.
[0203] Conventional pipeline, as illustrated with respect to FIG.
22A, collects camera feeds from several angles and forms a
three-dimensional (3D) model of the feeds. This 3D model may then
be represented and encoded in certain manners, such as point cloud
representation. Such representations and encodings are lossy
compression that introduce artifacts on the final content generated
by a 3D renderer. These artifacts may be in the form of colored
noise on parts of the content (e.g., like salt and pepper noise on
surfaces), distortions in the 3D geometry of objects, missing
regions in the 3D geometry, etc. This conventional pipeline and its
techniques fail to correct these artifacts.
[0204] Embodiments provide for a novel technique for gathering
semantic information during capture of content by cameras and using
the semantic information to correct conventional artifacts on the
render side. Further, this gathered semantic information can be
used to more intelligently ecocide content.
[0205] For example, detection and selection logic 2101 may be used
to detect the content, such as images or videos of objects (e.g.,
humans, trees, furniture, cars, etc.), captured by one or more
cameras, such as camera A 2181, camera B 2183, camera C 2185, and
camera N 2187, in communication with construction device 2000. It
is contemplated that embodiments are not limited to any number or
type of cameras nor are they limited to how cameras 2181-2187 are
in communication with construction device 2000, such as one or more
of cameras 2181-2187 may be independently located, or part of I/O
source(s) 2004, or part of another computing device in
communication with construction device 2000.
[0206] Upon having the content (e.g., scenes having images of
objects, etc.) collected through one or more camera feeds as
captured by one or more cameras 2181-2187, the content is then
communicated onto model formation logic 2105 to form a 3D model of
the captured content. However, in one embodiment, this 3D model
formation is based on semantic data that is extracted using
extraction logic 2103 and communicated on to model formation logic
2105. In one embodiment, extraction logic 2103 may be triggered
during capture of scenes by cameras 2181-2187 to simultaneously
gather semantic data that may then be used to form the 3D model as
facilitated by model formation logic 2105.
[0207] In one embodiment, by using the semantic data for 3D model
formation, as facilitated by semantic data extraction on any
gathered semantic data is intelligent used for correcting any
artifacts in the captured content when rendering the content as
facilitated by rendering logic 2167 at render device 2150. Further,
the semantic data is intelligently used for encoding the content
through an encoder as facilitated by encoding logic 2109.
[0208] Semantic Data Extraction
[0209] Semantic Data Content.
[0210] In one embodiment, extraction of the semantic data may be
facilitated through extraction logic 2103, where the semantic data
may include semantic segmentation of individual camera feeds
corresponding to cameras 2181-2187 into predetermined object
classes. These object classes may include (but not be limited to)
everyday objects like table, chair, floor mat, wall, human body
parts like face, hair, face, skin, legs, etc., where nearly
anything in the world that could be seen and used as a label to
annotate a video feed may be considered a semantic class; further,
any type of material (e.g., fabric, steel, wood, etc.) of such
objects may also be predicted. Semantic segmentation aims to label
every pixel in a given image with a semantic class label. For
example, it contains dense information in terms of object
boundaries as well as object classes, while annotation can go
further to identify things like human faces, sound absorbing or
reflecting properties of surfaces, light emitting or reflecting
properties of surfaces, predicting of light sources in the images,
and/or the like.
[0211] Encoding of Semantic Data.
[0212] Further, upon 3D model formation by model formation logic
2105, the semantic data may be encoded by encoding logic 2109 such
that the semantic data, as captured and predicted on the content
capture side at construction device 2000, may be considered
metadata and encoded through an encoder, as facilitated by encoding
logic 2109, in a manner how texture maps are encoded. Further, in
one embodiment, semantic data labels are maintained in a codebook
as facilitated by codebook and classification logic 2111, where the
codebook is universal so that encoding is done with minimal number
of bits required and no additional data is needed to be packed
during encoding of the semantic data. Embodiments are not limited
in terms of where the codebook resides, such as it may be part of
construction device 2000 or be stored in database(s) 2160 or at
render device 2150 on the render side. For example, construction
side or capture-side may have the codebook as part of decoding
routines, or it may request it at the beginning of the render from
a central server computer where the content may be streaming.
[0213] Intelligent Encoding Using Semantic Data.
[0214] Further, encoding from a 3D model point cloud representation
may be performed in several ways as facilitated by encoding logic
2109. For example, projection-based encoding may be based on
projection surface selection, patch segmentation, etc., where
selection of projection surfaces and patches for encoding may be
used to minimize artifacts when the content is decoded by a decoder
and as facilitated by decoding logic 2163, upon receiving the
contents and the semantic data through detection and reception
logic 2161 from communication/compatibility logic 2107.
[0215] In one embodiment, optimization criteria may be used for
encoding purposes, where optimization criteria may include one or
more of minimizing the encoded content size, minimizing the
projection error, and minimizing the errors as introduced by
selecting projection and/or patch boundaries inside certain parts
of the contents, such as human faces. For example, understanding
semantic classes, such as human faces, may be used to apply and
achieve the above-mentioned third optimization criterion, such as
minimizing the errors.
[0216] For example, conventionally, an image of a human face split
into several patches may result in artifacts across the human face
when the textures are stitched together and rendered using display
device. In one embodiment, as facilitated by construction pipeline
mechanism 2010 and/or render pipeline mechanism 2160, the 3D model
is parsed for regions of interest of an object (e.g., human face)
and then a texture map is generated to keep the regions of interest
of the object intact, which eliminates or at least significantly
reduces artifacts in any of the regions of interest.
[0217] Semantic Data Interpretation
[0218] Normalizing Colors and Textures.
[0219] Meanwhile, at render device 2150 at the render side, the
semantic data and the associated content (including any artifacts)
from construction device 2000 are received through detection and
reception logic 2161, decoded using a decoder as facilitated by
decoding logic 2163, and then interpreted using interpretation
logic 2165. It is contemplated that some of the artifacts are
received in the form of salt and pepper noise on surfaces that are
seemingly homogenous, such as in case of human skin. For example, a
metadata map may show which pixels belong to the object based on
certain properties, such as human skin (based on a code of the tone
of the skin), which may then be used to correct pixels that are
regarded as noise in the object (such as spots or portions that are
not the same as or too different or far away from the skin tone),
while similar corrections may be made on surfaces that belong to
the same semantic class to normalize colors and textures of objects
of the content.
[0220] In one embodiment, as facilitated by interpretation logic
2165, having and interpreting semantic data associated with light
sources (such as information relating to location, intensity,
direction, temperature, etc.) and object geometry may be applied
intelligently to correct artifacts, such as by understanding where
the shadows would be and how they may affect colors and textures of
objects. An example pseudocode is illustrated below where all the
metadata received by detection and reception logic 2161 at render
device 2150 is collected in a list indexed by semanticClasses,
where modeling of the semantic class may involve using information
on, for example, object geometry, surface material type, light
sources and intensities in the room (such as to predict realistic
shadows), codebooks on semantic classes detailing world knowledge
on them, etc.
TABLE-US-00001 for each semanticClass in semanticClasses: model_s =
model (SemanticClass, micsInfoOnSemanticClass) for each pixel_patch
in semanticClass: correct_if_noise(pixel, model_s)
[0221] Filing the Gaps.
[0222] It is contemplated that decoded content may still include
gaps in the 3D geometry of the objects as occlusions, such as part
of a woman's dress may be missing at the time of rendering of the
content. In one embodiment, the semantic data at per pixel level is
interpreted to then be used to predict how missing surfaces may
appear, such as the woman's dress, and further, by having and using
this knowledge, interpretation logic 2165 may determine which
pixels belong to the object, such as the dress, and identify the
semantic class associated with the missing part (such as the gap
may be surrounded by dress pixels, etc.). This way, in one
embodiment, using correction and rendering logic 2167, any surface
with gaps may be re-made or fixed by having and interpreting the
knowledge revealing how the rest of the dress would appear or look.
It is contemplated that embodiments are not related to any type or
number of objects and that this novel technique may be applied to
objects of various types, such as human face, human skin, hair,
boats, trees, clothes, machines, nature, animals, and any of the
other everyday objects, etc.
[0223] Correction of Distortions.
[0224] It is contemplated that the contents may have several
distortions, which are needed to be fixed before rendering the
contents. It one embodiment, any distortions associated with any of
the objects in the content may first be detected through detection
and reception logic 2161 and then using the relevant semantic data
about the objects having the distortions, such distortions are
corrected as facilitated by correction and rendering logic
2167.
[0225] In one embodiment, a machine learning model may be trained
with distorted and un-distorted objects to learn how to detect
distorted objects using detection and selection logic 2101. For
example, a machine learning model may be built and trained over
time by feeding samples of distorted and accurate objects until the
model is entirely trained and is capable of recognizing and
identifying distortions any object and in one embodiment, detection
and reception logic 2161 is then used to detect such distortions
based on and as supported by this trained and efficient machine
learning model. It is contemplated that embodiments are not limited
to any type or number of objects and that machine learning models
may be trained to serve as predictors for any real-life objects,
whether they be living objects (e.g., humans, plants, animals,
etc.) or non-living objects (e.g., machines, rocks, etc.).
[0226] One the distortions are detected by detection and reception
logic 2161, any available pertinent semantic data is then
interpreted by interpretation logic 2165 and applied by correction
and rendering logic 2167 to correct the distortions, such as
filling the gaps as described above, where distortions may be
regarded and referred to as gaps. Further, in one embodiment, even
a distortion may contain some information that may be used to learn
about the distorted area and the applied along with any relevant
semantic data to fix the distortion. For example, a distorted
face's right side is shifted towards the bottom left such that
various parts or portions of the face may be detected by detection
and selection logic 2101 and then recovered or corrected using
correction and rendering logic 2167. This knowledge may then be
applied to train and use machine learning models to perform gap
predictions in objects.
[0227] In one embodiment, using the novel enhanced immersive media
pipeline, construction of point cloud is enhanced by fusing
AI-based image object classification, such as by training and
applying machine learning models, as facilitated by codebook and
classification logic 2111. For example, codebook stitch object
properties may be used to enhanced clarity of objects at render
time, where object properties may include (but not be limited to)
matte, glossiness, texture, etc. For example, semantic data may be
used to obtain or learn and then apply properties like (but not
limited to) point cloud context, image and/or object classification
and/or segmentation, and codebook semantic properties on the
construction side at construction device 2000, where some of these
properties may be stored at database(s) 2030. In one embodiment, on
the render side, such as at render device 2150, properties like
point cloud context may be used and combined with codebook semantic
properties to obtain object and/or image reconstruction to produce
a rendering object that is then rendered by correction and
rendering logic 2167, where the object is display using one or more
display devices embedded in or in communication with render device
2150.
[0228] Communication/compatibility logic 2107 may be used to
facilitate the needed communication and compatibility between any
number of devices of construction device 2000 and various
components of construction pipeline mechanism 2110. Similarly,
communication/display logic 2169 may be used to facilitated
communication and compatibility between the various components of
render device 2150 and render pipeline mechanism 2160.
[0229] Communication/compatibility logic 2107 may be used to
facilitate dynamic communication and compatibility between
construction device 2000 and any number and type of other computing
devices (such as mobile computing device, desktop computer, server
computing device, etc.); processing devices or components (such as
CPUs, GPUs, etc.); capturing/sensing/detecting devices (such as
capturing/sensing components including cameras, depth sensing
cameras, camera sensors, red green blue (RGB) sensors, microphones,
etc.); display devices (such as output components including display
screens, display areas, display projectors, etc.);
user/context-awareness components and/or
identification/verification sensors/devices (such as biometric
sensors/detectors, scanners, etc.); database(s) 2130, such as
memory or storage devices, databases, and/or data sources (such as
data storage devices, hard drives, solid-state drives, hard disks,
memory cards or devices, memory circuits, etc.); communication
medium(s) 2125, such as one or more communication channels or
networks (e.g., Cloud network, the Internet, intranet, cellular
network, proximity networks, such as Bluetooth, Bluetooth low
energy (BLE), Bluetooth Smart, Wi-Fi proximity, Radio Frequency
Identification (RFID), Near Field Communication (NFC), Body Area
Network (BAN), etc.); wireless or wired communications and relevant
protocols (e.g., Wi-Fi.RTM., WiMAX, Ethernet, etc.); connectivity
and location management techniques; software applications/websites
(e.g., social and/or business networking websites, etc., business
applications, games and other entertainment applications, etc.);
and programming languages, etc., while ensuring compatibility with
changing technologies, parameters, protocols, standards, etc.
[0230] Throughout this document, terms like "logic", "component",
"module", "framework", "engine", "mechanism", "circuit", and
"circuitry", and/or the like, are referenced interchangeably and
may include, by way of example, software, hardware, firmware, or
any combination thereof. In one example, "logic" may refer to or
include a software component that works with one or more of an
operating system (e.g., operating system 2006), a graphics driver
(e.g., graphics driver 2016), etc., of a computing device, such as
construction device 2000. In another example, "logic" may refer to
or include a hardware component that is capable of being physically
installed along with or as part of one or more system hardware
elements, such as an application processor (e.g., CPU 2012), a
graphics processor (e.g., GPU 2014), etc., of a computing device,
such as construction device 2000. In yet another embodiment,
"logic" may refer to or include a firmware component that is
capable of being part of system firmware, such as firmware of an
application processor (e.g., CPU 2012) or a graphics processor
(e.g., GPU 2014), etc., of a computing device, such as computing
device 2000. In other words, "logic" may itself be or include the
circuitry or hardware component to perform certain tasks or
facilitate certain circuitry or hardware components to perform
certain tasks or be executed by one or more processors, such as
graphics processor 2014, application processor 2012, etc., to
perform certain tasks.
[0231] Further, any use of a particular brand, word, term, phrase,
name, and/or acronym, such as "reconstruction", "point cloud
reconstruction", "coarse visual hull", "fine visual hull",
"distance field and normal", "visibility", "photo-consistency",
"smoothness", "output", "GPU", "GPU domain", "GPGPU", "CPU", "CPU
domain", "graphics driver", "workload", "application", "graphics
pipeline", "pipeline processes", "register", "register file", "RF",
"extended register file", "ERF", "execution unit", "EU",
"instruction", "API", "3D API", "OpenGL.RTM.", "DirectX.RTM.",
"fragment shader", "YUV texture", "shader execution", "existing UAV
capabilities", "existing backend", "hardware", "software", "agent",
"graphics driver", "kernel mode graphics driver", "user-mode
driver", "user-mode driver framework", "buffer", "graphics buffer",
"task", "process", "operation", "software application", "game",
etc., should not be read to limit embodiments to software or
devices that carry that label in products or in literature external
to this document.
[0232] It is contemplated that any number and type of components
may be added to and/or removed from construction pipeline mechanism
2010 and/or render pipeline mechanism 2150 to facilitate various
embodiments including adding, removing, and/or enhancing certain
features. For brevity, clarity, and ease of understanding of
construction pipeline mechanism 2010, many of the standard and/or
known components, such as those of a computing device, are not
shown or discussed here. It is contemplated that embodiments, as
described herein, are not limited to any technology, topology,
system, architecture, and/or standard and are dynamic enough to
adopt and adapt to any future changes.
[0233] FIG. 22 illustrates a conventional pipeline 2200 employing a
conventional technique. As illustrated, conventional pipeline 2200
is limited to getting camera feeds from cameras 2201, 2203 and
forwarding the feeds for 3D model formation at 2209, followed by
encoding of content, at 2211, based on the camera feeds that are
now in a 3D model format. This encoded content is then passed over
from a first computer to a second computer over network 2213, where
at the second computer, the encoded content is decoded at 2215.
With this conventional pipeline 2200, any representation and
encoding of content at the first computer are based on lossy
compression, which introduces artifacts on the final content at the
second computer, where the final content is generated through 3D
rendering of the decoded content at 2217. This 3D rendering of the
content is then sent over for displaying at display device 2219. It
is contemplated that the artifacts from this conventional pipeline
2200 are typically in the form of colored noise on parts of the
final content (like salt and pepper noise on surfaces), distortions
in the 3D geometry of objects, missing regions in the 3D geometry,
etc. This conventional pipeline and its techniques fail to correct
these artifacts.
[0234] FIG. 23A illustrates an enhanced immersive media pipeline
2300 according to one embodiment. For brevity, many of the details
previously discussed with reference to FIGS. 1-22 may not be
discussed or repeated hereafter. Any processes relating to a
transaction sequence performed on or through enhanced pipeline 2300
may be performed by processing logic that may comprise hardware
(e.g., circuitry, dedicated logic, programmable logic, etc.),
software (such as instructions run on a processing device), or a
combination thereof, as facilitated by construction pipeline
mechanism 2010 of FIG. 20 and render pipeline mechanism 2160 of
FIG. 21. The processes associated with transaction sequence may be
illustrated or recited in linear sequences for brevity and clarity
in presentation; however, it is contemplated that any number of
them can be performed in parallel, asynchronously, or in different
orders.
[0235] In the illustrated embodiment, one or more camera feeds are
captured by and received though one or more cameras A 2181, B 2183,
C 2185, N 2187, where camera feeds include contents of scenes of
objects (any living or non-living things in nature, environment,
etc.), where such contents are then forwarded on to be formatted
into a 3D model at 2301, as facilitated by model formation logic
2105 of FIG. 21, and then encoded at 2303 by an encoder as
facilitated by encoding logic 2109 of FIG. 21.
[0236] As described with reference to FIG. 21, in one embodiment,
one or more of 3D model formation at 2309 and encoding at 2311 are
performed using sematic data which is extracted at 2321 as
facilitated by extraction logic 2103 of FIG. 21. For example,
specific information or properties relating to objects (e.g.,
humans, machines, plants, animals, buildings, shoes, etc.) may be
extracted through one or more ways, such as they may be captured
directly using one or more cameras 2301, extracted from the camera
feeds, and/or obtained through trained machine learning models,
etc.
[0237] For example, in one embodiment, semantic data may be based
on segmentation each camera feed into predetermined object classes,
an object class may include any number and type of everyday
objects, such as table, chair, care, floor, mountain, train, wall,
human face, hair, skin, nails, eyes, arms, etc. Further, semantic
classes may be used to obtain other pertinent information about
these objects, such as the type of material of an object, such as
steel, fabric, wood, human skin, etc. These semantic classes may be
used to annotate the objects from the camera feeds, such as a tool
made with steel, a shirt made with cotton, a table made with wood,
the color of a person's skin or hair or eyes, etc. These
annotations may then be used to for identification and other
purposes, such as exactly identifying objects like human face,
absorbing or reflecting properties of various surfaces, and even
predicting light sources in images, etc.
[0238] In one embodiment, the semantic data and all its features,
such as object classes, annotations, etc., are determined and used
during 3D model formation at 2301 and encoding at 2303. This
encoded contents, including and based on semantic data, is then
forward on from a construction device, such as construction device
2000 of FIG. 20, at construction side 2331 to a render device, such
as render device 2150 of FIG. 21, at render side 2333 over network
2125 (e.g., Internet, cloud network, proximity network, etc.).
[0239] Upon receiving the encoded contents on render side 2333, the
encoded contents are then decoded at 2305 by a decoder and as
facilitated by decoding logic 2163 of FIG. 21. Once the contents
are decoded, the decoded semantic data from the decoded contents is
then interpreted at 2323 as facilitated by interpretation logic
2165 of FIG. 21. In one embodiment, the interpreted semantic data
and the rest of the decoded contents are then prepared for 3D
rendering at 2307 as facilitated by correction and rendering logic
2167 of FIG. 21. In one embodiment, as facilitated by correction
and rendering logic 2167 of FIG. 21, the process of 3D rendering at
2307 includes using the interpreted semantic data to correct any
artifacts, gaps, distortions, etc., of the decoded contents
representing the camera fees. For example, the correction of
artifacts, gaps, distortions, etc., in decoded contents may include
normalizing colors and textures, filling of gaps, correction of
distortions, and/or the like.
[0240] This corrected 3D rendering of the contents is then allowed
to be rendered at one or more display devices/screens, such as HMD
2309, lightfield display 2311, etc., of the render device, such as
render device 2150 of FIG. 21, and/or that of one or more other
computing devices, such as mobile computing devices, wearable smart
devices, etc.
[0241] FIG. 23B illustrates an enhanced immersive media pipeline
2350 according to one embodiment. For brevity, many of the details
previously discussed with reference to FIGS. 1-23A may not be
discussed or repeated hereafter. Any processes relating to a
transaction sequence performed on or through enhanced pipeline 2300
may be performed by processing logic that may comprise hardware
(e.g., circuitry, dedicated logic, programmable logic, etc.),
software (such as instructions run on a processing device), or a
combination thereof, as facilitated by construction pipeline
mechanism 2010 of FIG. 20 and render pipeline mechanism 2160 of
FIG. 21. The processes associated with transaction sequence may be
illustrated or recited in linear sequences for brevity and clarity
in presentation; however, it is contemplated that any number of
them can be performed in parallel, asynchronously, or in different
orders.
[0242] As illustrated, in one embodiment, enhanced pipeline 2350 is
provided for enhanced construction of point cloud by fusing
AI-based image and/or object classification. As illustrated and
discussed above, point cloud context 2351, image and/or object
classification recognition information 2353, and codebook semantic
properties 2355 are gathered and maintained at construction device
2200 at construction side. For example, codebook stitch object
properties of codebook semantic properties 2355 are used to enhance
the clarity of objects and/or images at render time, where the
object properties may include (but not be limited to) matter,
glossiness, texture, etc.
[0243] In one embodiment, any amount and type of information
contained within point cloud context 2351, image and/or object
classification recognition information 2353, and codebook semantic
properties 2355 may be communicated on to render device 2150 on
render side over network 2125 (e.g., Internet, cloud network,
proximity network). For example, as illustrated, point cloud
context 2357 at render device 2150 may be used with image and/or
object reconstruction information 2359 at render device 2150 based
on codebook semantic properties 2355 of construction device 2200 to
generate images and/or objects rendering version 2361. Further, in
one embodiment, point cloud context 2351 are optimized at
construction device 2000 before being sent to render device 2150 as
point cloud context 2357, where, in one embodiment, using
image/object classification recognition information 2353, any
objects associated with point cloud context 2351 are segmented in a
manner that regions or areas identified through classification
remain intact and are then offered to render device 2150 through
point cloud context 2357, leading to image/object reconstruction
2359 based on codebook semantic properties 2355. In one embodiment,
this final or rendering version 2361 of images and/or object is
then rendered by render device 2150 to be displayed using one or
more display devices/screens.
[0244] FIG. 24A illustrates a method 2400 for using semantic data
in an enhanced immersive media pipeline according to one
embodiment. For brevity, many of the details previously discussed
with reference to FIGS. 1-23B may not be discussed or repeated
hereafter. Any processes relating to method 2400 may be performed
by processing logic that may comprise hardware (e.g., circuitry,
dedicated logic, programmable logic, etc.), software (such as
instructions run on a processing device), or a combination thereof,
as facilitated by construction pipeline mechanism 2010 of FIG. 20
and render pipeline mechanism 2160 of FIG. 21. The processes
associated with transaction sequence may be illustrated or recited
in linear sequences for brevity and clarity in presentation;
however, it is contemplated that any number of them can be
performed in parallel, asynchronously, or in different orders.
[0245] Method 2400 begins at block 2401 with capturing of scenes by
one or more cameras in communication with a computing device (e.g.,
construction device), where this capturing of scenes represents
content regarded as camera feeds. At block 2403, semantic data
relating to objects captured in the scenes is extracted from the
content itself based on known or determined properties associated
with the objects. For example, fabric type and color of a shirt
worn by an object, such as a person, in a scene may be regarded as
semantic data associated with the person.
[0246] At block 2405, in one embodiment, a 3D model of the content
and any semantic data associated with any of the objects of the
content is generated through 3D model formation. Further, in one
embodiment, encoding of the 3D model (including the content and the
semantic data) is performed using one or more encoders at block
2407, where this encoded information of the 3D model is then
transmitted from the construction device to another computing
device (e.g., render device) at block 2409 over one or more
networks, such as a cloud network, the Internet.
[0247] At block 2411, upon receiving the encoded 3D model at the
render device, the encoded information is decoded information at
the render device using one or more decoders, where the decoded
information includes decoded semantic data and decoded scene
contents including the objects. At block 2413, in one embodiment,
the semantic data is then interpreted to be used to correct the
various distortions associated with the objects, where such
distortions may include artifacts, gaps, etc. At block 2415, any
precious information about the objects obtained from the
interpreted semantic data is used to correct the various
distortions in objects, such as by applying the precise information
about the objects obtained from the semantic data, such as by
normalizing colors and textures of the objects, filling the gaps in
objects, etc. At block 2417, generate 3D rendering of the scenes
using the decoded contents including distortion-free objects based
on the interpreted semantic data. At block 2419, render the scenes,
as facilitated to be rendered by the render device, including
displaying the scenes for viewing by users using one or more
devices associated with the render device.
[0248] FIG. 24B illustrates a method 2450 for using codebook
properties in an enhanced immersive media pipeline according to one
embodiment. For brevity, many of the details previously discussed
with reference to FIGS. 1-24A may not be discussed or repeated
hereafter. Any processes relating to method 2450 may be performed
by processing logic that may comprise hardware (e.g., circuitry,
dedicated logic, programmable logic, etc.), software (such as
instructions run on a processing device), or a combination thereof,
as facilitated by construction pipeline mechanism 2010 of FIG. 20
and render pipeline mechanism 2160 of FIG. 21. The processes
associated with transaction sequence may be illustrated or recited
in linear sequences for brevity and clarity in presentation;
however, it is contemplated that any number of them can be
performed in parallel, asynchronously, or in different orders.
[0249] Method 2450 begins at block 2451 with determination codebook
semantic properties of objects in images in a scene captured by one
or more cameras associated or in communication with a computing
device, such as a construction device. In one embodiment, the
codebook semantic properties associated with objects are used to
enhance construction of point cloud by fusing AI-based image and/or
object classification. For example, codebook properties may include
any number and type of properties associated with objects, such as
matter, glossiness, texture of the surface of an object, etc. These
codebook properties are maintained in a codebook and along with
point cloud context and image and/or object classification
recognition information, etc., may be stored at a database
associated with the construction device at block 2453. At block
2455, the codebook and other information, such as image and/or
object classification information, etc., are transmitted on to a
render device over a network (e.g., cloud network, Internet,
etc.).
[0250] In one embodiment, codebook sematic properties, like
semantic data described earlier, may then be used with point cloud
context, image and/or object classification recognition, etc., to
provide reconstruction of image and/or object on the render
computer at block 2457. This image and/or object reconstruction is
then used to generate a rendering version of the objects from the
scene at block 2459, where this rendering version is rendered and
displayed through the render device using one or more display
devices at block 2461.
[0251] References to "one embodiment", "an embodiment", "example
embodiment", "various embodiments", etc., indicate that the
embodiment(s) so described may include particular features,
structures, or characteristics, but not every embodiment
necessarily includes the particular features, structures, or
characteristics. Further, some embodiments may have some, all, or
none of the features described for other embodiments. In the
foregoing specification, embodiments have been described with
reference to specific exemplary embodiments thereof. It will,
however, be evident that various modifications and changes may be
made thereto without departing from the broader spirit and scope of
embodiments as set forth in the appended claims. The Specification
and drawings are, accordingly, to be regarded in an illustrative
rather than a restrictive sense.
[0252] In the following description and claims, the term "coupled"
along with its derivatives, may be used. "Coupled" is used to
indicate that two or more elements co-operate or interact with each
other, but they may or may not have intervening physical or
electrical components between them.
[0253] As used in the claims, unless otherwise specified the use of
the ordinal adjectives "first", "second", "third", etc., to
describe a common element, merely indicate that different instances
of like elements are being referred to, and are not intended to
imply that the elements so described must be in a given sequence,
either temporally, spatially, in ranking, or in any other
manner.
[0254] The following clauses and/or examples pertain to further
embodiments or examples. Specifics in the examples may be used
anywhere in one or more embodiments. The various features of the
different embodiments or examples may be variously combined with
some features included and others excluded to suit a variety of
different applications. Examples may include subject matter such as
a method, means for performing acts of the method, at least one
machine-readable medium including instructions that, when performed
by a machine cause the machine to perform acts of the method, or of
an apparatus or system for facilitating hybrid communication
according to embodiments and examples described herein.
[0255] Some embodiments pertain to Example 1 that includes an
apparatus to facilitate enhanced immersive media pipeline for
correction of artifacts and clarity of objects in computing
environments, the apparatus comprising: one or processors to:
extract semantic data relating to objects in a scene captured
through one or more cameras, wherein the objects include
distortions; form, based on the semantic data, a three-dimensional
(3D) model of contents of the scene, wherein the contents include
the objects; encode the 3D model including the contents and the
semantic data into an encoded file having encoded contents and
encoded semantic data; and transmit the encoded file over an
immersive media pipeline to facilitate correction of the
distortions and rendering the scene including the objects without
the distortions.
[0256] Example 2 includes the subject matter of Example 1, wherein
the one or more processors are further to detect the scene and the
distortions associated with the objects, wherein the distortions
include artifacts and gaps, wherein the contents of the scene are
based on or include immersive media contents including immersive
videos.
[0257] Example 3 includes the subject matter of Examples 1-2,
wherein the semantic data comprises properties associated with the
objects, wherein the properties include one or more of lighting
properties, sound properties, and semantic labeling, wherein the
objects include one or more of living things and non-living
things.
[0258] Example 4 includes the subject matter of Examples 1-3,
wherein the properties codebook properties are maintained in a
codebook at a database, wherein the codebook properties to
facilitate encoding of the 3D model with minimal bits, wherein the
codebook properties are further to facilitate classification of the
objects based on one or more of texture, material, and form.
[0259] Example 5 includes the subject matter of Examples 1-4,
wherein the immersive videos comprise one or more of three
degree-of-freedom+(3DoF+) videos and six degree-of-freedom (6DoF)
videos, wherein the one or more processors comprise one or more of
a graphics processor and an application processor, wherein the
graphics and application processors are co-located on a common
semiconductor package.
[0260] Some embodiments pertain to Example 6 that includes an
apparatus to facilitate enhanced immersive media pipeline for
correction of artifacts and clarity of objects in computing
environments, the apparatus comprising: one or more processors to:
receive an encoded file having encoded contents and encoded
semantic data associated with objects in a scene; decode the
encoded contents and the encoded semantic data into decoded
contents and decoded semantic data, respectively; interpret the
semantic data based on the contents including the objects having
distortions; and correct, based on the interpreted semantic data,
the distortions associated with the objects.
[0261] Example 7 includes the subject matter of Example 6, wherein
the correction of the distortions comprises one or more of
normalizing colors and textures of the objects and filling gaps in
the objects.
[0262] Example 8 includes the subject matter of Examples 6-7,
wherein the one or more processors are further to prepare a
rendering version of the scene, wherein the rendering version
includes the objects without the distortions.
[0263] Example 9 includes the subject matter of Examples 6-8,
wherein the one or more processors are further to render the
rendering version of the scene such that the scene is display for
viewing using one or more display devices, wherein the contents of
the scene are based on or include immersive media contents
including immersive videos.
[0264] Example 10 includes the subject matter of Examples 6-9,
wherein the immersive videos comprise one or more of three
degree-of-freedom+(3DoF+) videos and six degree-of-freedom (6DoF)
videos, wherein the one or more processors comprise one or more of
a graphics processor and an application processor, wherein the
graphics and application processors are co-located on a common
semiconductor package.
[0265] Some embodiments pertain to Example 11 that includes a
method for facilitating enhanced immersive media pipeline for
correction of artifacts and clarity of objects in computing
environments, the method comprising: extracting semantic data
relating to objects in a scene captured through one or more
cameras, wherein the objects include distortions; forming, based on
the semantic data, a three-dimensional (3D) model of contents of
the scene, wherein the contents include the objects; encoding the
3D model including the contents and the semantic data into an
encoded file having encoded contents and encoded semantic data; and
transmitting the encoded file over an immersive media pipeline to
facilitate correction of the distortions and rendering the scene
including the objects without the distortions.
[0266] Example 12 includes the subject matter of Example 11,
further comprising detecting the scene and the distortions
associated with the objects, wherein the distortions include
artifacts and gaps, wherein the contents of the scene are based on
or include immersive media contents including immersive videos.
[0267] Example 13 includes the subject matter of Examples 11-12,
wherein the semantic data comprises properties associated with the
objects, wherein the properties include one or more of lighting
properties, sound properties, and semantic labeling, wherein the
objects include one or more of living things and non-living
things.
[0268] Example 14 includes the subject matter of Examples 11-13,
wherein the properties codebook properties are maintained in a
codebook at a database, wherein the codebook properties to
facilitate encoding of the 3D model with minimal bits, wherein the
codebook properties are further to facilitate classification of the
objects based on one or more of texture, material, and form.
[0269] Example 15 includes the subject matter of Examples 11-14,
wherein the immersive videos comprise one or more of three
degree-of-freedom+(3DoF+) videos and six degree-of-freedom (6DoF)
videos, wherein the method is facilitated by one or more processors
of a computing device, the one or more processors comprising one or
more of a graphics processor and an application processor, wherein
the graphics and application processors are co-located on a common
semiconductor package of the computing device.
[0270] Some embodiments pertain to Example 16 that includes a
method for facilitating enhanced immersive media pipeline for
correction of artifacts and clarity of objects in computing
environments, the method comprising: receiving an encoded file
having encoded contents and encoded semantic data associated with
objects in a scene; decoding the encoded contents and the encoded
semantic data into decoded contents and decoded semantic data,
respectively; interpreting the semantic data based on the contents
including the objects having distortions; and correcting, based on
the interpreted semantic data, the distortions associated with the
objects.
[0271] Example 17 includes the subject matter of Example 16,
wherein the correction of the distortions comprises one or more of
normalizing colors and textures of the objects and filling gaps in
the objects.
[0272] Example 18 includes the subject matter of Examples 16-17,
wherein the one or more processors are further to prepare a
rendering version of the scene, wherein the rendering version
includes the objects without the distortions.
[0273] Example 19 includes the subject matter of Examples 16-18,
further comprising rendering the rendering version of the scene
such that the scene is display for viewing using one or more
display devices, wherein the contents of the scene are based on or
include immersive media contents including immersive videos.
[0274] Example 20 includes the subject matter of Examples 16-19,
wherein the immersive videos comprise one or more of three
degree-of-freedom+(3DoF+) videos and six degree-of-freedom (6DoF)
videos, wherein the method is facilitated by one or more processors
of a computing device, the one or more processors comprising one or
more of a graphics processor and an application processor, wherein
the graphics and application processors are co-located on a common
semiconductor package of the computing device.
[0275] Some embodiments pertain to Example 21 includes a data
processing system comprising a processing device to: extract
semantic data relating to objects in a scene captured through one
or more cameras, wherein the objects include distortions; form,
based on the semantic data, a three-dimensional (3D) model of
contents of the scene, wherein the contents include the objects;
encode the 3D model including the contents and the semantic data
into an encoded file having encoded contents and encoded semantic
data; and transmit the encoded file over an immersive media
pipeline to facilitate correction of the distortions and rendering
the scene including the objects without the distortions; and a
memory communicatively coupled to the processing device.
[0276] Example 22 includes the subject matter of Example 21,
wherein the processing device is further to detect the scene and
the distortions associated with the objects, wherein the
distortions include artifacts and gaps, wherein the contents of the
scene are based on or include immersive media contents including
immersive videos.
[0277] Example 23 includes the subject matter of Examples 21-22,
wherein the semantic data comprises properties associated with the
objects, wherein the properties include one or more of lighting
properties, sound properties, and semantic labeling, wherein the
objects include one or more of living things and non-living
things.
[0278] Example 24 includes the subject matter of Examples 21-23,
wherein the properties codebook properties are maintained in a
codebook at a database, wherein the codebook properties to
facilitate encoding of the 3D model with minimal bits, wherein the
codebook properties are further to facilitate classification of the
objects based on one or more of texture, material, and form.
[0279] Example 25 includes the subject matter of Examples 21-24,
wherein the immersive videos comprise one or more of three
degree-of-freedom+(3DoF+) videos and six degree-of-freedom (6DoF)
videos, wherein the processing device comprises a graphics
processor coupled to an application processor, wherein the graphics
and application processors are co-located on a common semiconductor
package of the data processing system.
[0280] Some embodiments pertain to Example 26 includes a data
processing system comprising a processing device to: receive an
encoded file having encoded contents and encoded semantic data
associated with objects in a scene; decode the encoded contents and
the encoded semantic data into decoded contents and decoded
semantic data, respectively; interpret the semantic data based on
the contents including the objects having distortion